Mechanical Properties of Rubber - An Overview109 Table 2 Variation in mechanical properties of WR15 blend with addition of treated and untreated fly ash Sample Fly ash (FA) content Si-69 content (CA) Tensile strength [MPa] Elongation at break [%] Flexural strength [MPa] Flexural modulus [MPa] Tensile impact strength [kJ/m 0000009935 00000 n 0000002645 00000 n In this article we will describe the physical properties of rubber that you will see on a physical property data sheets for elastomers that are tested to ASTM D2000 specifications. 0000020260 00000 n Chellappa Chandrasekaran, in Anticorrosive Rubber Lining, 2017. Good. 4 Reasons Neoprene Rubber Sheets are Ideal for Varied Applications, Neoprene Foam: A Collaborative History of Neoprene Sponge Rubber, How is Natural Rubber Made? 295 0 obj <> endobj Synthetic rubbers are usually engineered to have very specific qualities, mostly because when they are made, specific functions are kept in mind. endstream endobj 305 0 obj<> endobj 306 0 obj<> endobj 307 0 obj<> endobj 308 0 obj<> endobj 309 0 obj<> endobj 310 0 obj<> endobj 311 0 obj<> endobj 312 0 obj<>stream What Are the Unique Characteristics of Recycled Rubber Products? Material Reference. 15 to 95 Mechanical Properties: Nitrile Rubber: Neoprene Rubber: Compression Set. With its excellent strength and abrasion properties, combined with a wide temperature range of between -20˚C and 80˚C (depending on the grade of rubber), Neoprene rubber gaskets have the right characteristics to be used in a number of industrial applications, for example, for sealing gaskets to protect against the ingress of water and dust. 0000002050 00000 n Originally produced by the American DuPont Corporation, Neoprene is a brand name of polychloroprene, which is used as a substitute for rubber. Acoustic impedance of the materials were evaluated and compared with the acoustic impedance of sea water. 3 ♦ Thermal Properties Low Temperature Range - 70º F to - 30º F Minimum for Continuous Use (Static) - 80º F … 0000005415 00000 n Polychloroprene rubber has a perfect balance of mechanical properties and fatigue resistance which is second only to natural rubber. 0000000016 00000 n Fair to Very Good. In this work, mechanical properties of selected rubber materials, that is, natural rubber (NR), styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), and ethylene propylene diene monomer (EPDM), were evaluated using a near infrared (NIR) spectroscopy technique. Neoprene rubber also has superior oil, chemical and heat resistance. 0000009423 00000 n endstream endobj 296 0 obj<>/Metadata 16 0 R/PieceInfo<>>>/Pages 15 0 R/PageLayout/OneColumn/OCProperties<>/StructTreeRoot 18 0 R/Type/Catalog/LastModified(D:20050405152721)/PageLabels 13 0 R>> endobj 297 0 obj<>/PageElement<>>>/Name(HeaderFooter)/Type/OCG>> endobj 298 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>>/Type/Page>> endobj 299 0 obj<> endobj 300 0 obj[/ICCBased 323 0 R] endobj 301 0 obj<> endobj 302 0 obj<> endobj 303 0 obj<>stream H�TP�n�0��St��v4�$��>P���vĔ@˃���k'�@zG�q�3���(�:�n�f�d"��ql��PUB���y�C�ūz���ѐ������v�#Ru {!�:|�A�3h��r�M�[��6Ț�J)�V��>�w֥7W��]�Z�� ϼ|�݈�������H���� >d��O� o?j� BRP’s ultra-strength neoprene rubber is made with 100% virgin polychloroprene polymer and demonstrates fire resistant properties. The graph bars on the material properties cards below compare CR rubber to other rubber materials (top) and the entire database (bottom). The following chart is provided as a guide only. Neoprene was originally used as an oil resistant replacement for natural rubber. H���MO�0���slu�߶�8�"�J]�ā�P�Wt�&%Z��&i)�n�H�(�;3y' �����t�,�q��o&$ t These are the inherent characteristics of neoprene. 0000013181 00000 n 0000004654 00000 n Neoprene has a typical service temperature range between –50° F and +275° F. ADVANTAGES: Neoprene is known for its versatility. Please note that information presented here is general to Neoprene polymer. The EP21TDC-4 bonds well to a wide variety of rubbers, metals and plastics. It exhibits good UV and ozone stability and has good chemical resistance to oil, fuel, and many other chemicals. endstream endobj 314 0 obj<> endobj 315 0 obj<>stream Basic Characteristics of Neoprene Neoprene Polychloroprene is a multipurpose elastomer that has a balanced combination of properties. CR rubber is a thermoset elastomer or rubber material. The High Demand for Tire Rubber in California. x�bb�b`b``Ń3� ���� � �e� Sponge Silicone – Rubber-Cal Industrial Rubber Products, Three Silicone Rubber Applications That We Couldn't Live Without, The Extreme, Thermally Stable Rubber - Silicone and Its Key Properties, Silicone Sponge Rubber’s Industrial History and Development, Recycle, Reduce, Reuse: Reclaimed Rubber’s Journey, Recycled Rubber Strips and Sheets – Old Rubber Tires Made Anew. �ϵ��f�?��1�����lr9�{`��z`r����8v`D�V\v`d�]-֪F��k����Ŧ�}g�펂\9�;���.8��k~9 �p�(ZD�O�M�����!8��R�#�%��n!�[t�{�(m�t\���#-a��_����^�~�� %%EOF trailer RFQ – Sheeting & Mixed Goods. We doesn't provide neoprene rubber mechanical properties products or service, please contact them directly and verify their companies info carefully. Polychloroprene rubber is used as a membrane diaphragm in membrane valves at many nuclear plant locations in OKG, Ringhals, and Forsmark. 89, No. 0000008681 00000 n Neoprene, also called chloroprene, is in fact produced in such large volumes that it is also a cost-effective product. 26. ul listed epdm/neoprene closed cell rubber blend, durafoam™ dk series (dk111, dk2121, dk3131, dk4141, dk5151) ul recognized durafoam dk series closed cell rubber is the only full line of astm sce 41 through sce 45 that is recognized to ul 50, ul 157, ul508, ul … 0000003562 00000 n neoprene rubber mechanical properties. Hardness (Shore A) 35 to 90. Rubber compounding is a very broad and technical field, since basic rubbers or elastomers are mixed with various chemicals and ingredients (and even with each other) to obtain desired physical properties. 0 After all, synthetic rubber products are man-made and they are in-production because they fulfill a need. A Brief Outline of the History of Natural Rubber, Characterizing Foam Neoprene - Discerning Open & Closed Cell Neoprene, How A Neoprene Bearing Pad Handles Heavy Loads, The Outdoor Rubber - EPDM Boasts a Versatile Set of Properties, As A Rubber Sheet, Neoprene Offers Unique Characteristics, Sheets Of Neoprene – Available Forms and Styles. Polychloroprene Rubber. 0000002609 00000 n All of the samples were then scanned using a FT-NIR spectromete… 0000006790 00000 n Good to Very Good. 0000005865 00000 n ELECTRICAL AND DIELECTRIC PROPERTIES OF RUBBER C. M. ROLAND NAVAL RESEARCH LABORATORY,CHEMISTRY DIVISION,CODE 6105, WASHINGTON DC 20375 RUBBER CHEMISTRY AND TECHNOLOGY, Vol. �n�)ܪf�(5iv ��j��z����r��`2�ˡi��0�� 3��ؐp�UUlh8��*Ï M9� Can Rubber be Recycled? Or better yet, use the rubber chart to find which material will best suit your environment. When used in liners, seals and gaskets, neoprene brings plenty of chemical and physical properties to the table. A neoprene rubber sheet can be used in applications, such as creating neoprene seals or a neoprene liner. How Do NBR Sheets Set Themselves Apart From Other Rubber Sheeting? Neoprene sheet rubber is a general purpose industrial gasketing material for use with non-aromatic petroleum oils and greases. Recycled Rubber Sheet versus Synthetic Rubber Sheeting. 0000006657 00000 n 10 Steps Everyone Can Understand. 0000003286 00000 n These characteristics make neoprene a natural fit for the automotive world, where neoprene rubber applications are used for many exposed parts that can encounter oil or petroleum. 0000007089 00000 n 0000027515 00000 n 0000002965 00000 n Neoprene rubber can withstand weathering and resists flex cracking. <]>> 1999 - 2019 Rubber-Cal All rights reserved. Here are some of neoprene’s more notable traits: When used in liners, seals and gaskets, neoprene brings plenty of chemical and physical properties to the table. Rubber Material Selection Guide CR or Neoprene® Polychloroprene Robinson Rubber Products - Neoprene® © Copyright 2005 Robinson Rubber Products Company, Inc. All rights reserved. All neoprene rubber mechanical properties wholesalers & neoprene rubber mechanical properties manufacturers come from members. 0000001423 00000 n ���l�2�J�@��-)�Co���.���$�x6�7��n7���# ����n�_��Ɓu�r�>�����M"��d�[r���oc� ~�j�o��=��|����y����w����6%(�|ܦD%�۔d�p�e��Jl��l����- ... Its mechanical properties are generally inferior to those of natural rubber but it has superior chemical resistance. 1, pp. This type of rubber (Polychloroprene rubber or Neoprene) is widely used in general engineering applications. 0000005637 00000 n “Rubbertown”: The Birthplace of Neoprene Manufacturing, How to Cut Rubber on Your Own in Four Simple Steps, Types of Rubber Sheets Available to Market, What is Rubber Used for: The 49 Places You Will See Rubber, Synthetic Sheets: Rubber In Its Most Useful Form, Find the Right Elastomer Sheet for Your Application, What Lead to the Invention of Styrene Butadiene Rubber, Synthetic Rubber Types - Santoprene and Neoprene, Types of Synthetic Rubber: Santoprene and Styrene-Butadiene, Santoprene 101 Sheet Rubber – A Premium Thermoplastic Material, Practical Qualities of Thermoplastic Sheets, Santoprene Sheet a Combination of Plastic and Rubber, The History of Synthetic Rubber: From Goodyear to Great Success, Recycled Rubber Rolls and Matting Help You and the Environment, Choosing Your Neoprene Sheet Rubber - Durometer and Density, America's Recycled Rubber Manufacturer's Create Eco-Friendly Products. Rolls and sheets of neoprene in blends and pure form are available in a variety of thicknesses and sizes. Are Sheets of Neoprene Available in Different Varieties and Options? (���IA�l�^@Z ����T*�j�������LO0F0d1�f��p���5�DFv&)Ə�o0c��$��%��p�a��l���Oe`��`(`��y����F��@�����H3�g� ��� ��&@� ԓ:c 0000005034 00000 n Speak with us to help you choose the best product for your application. Neoprene rubber, NR, CR, Chloroprene, Sponge Neoprene...Why So Many Names? H�T��n� �w��c� ��T)b�.ڞ�\w���!o�������̏�{�]~�`:L08o 簐A���. From DuPont Laboratories to Neoprene Roll and Stripping! CR is also known for its excellent abrasion resistance and toughness. For assistance in identifying the appropriate polymer or material, or to develop and formulate a CR or Neoprene / polychloroprene rubber compound to meet your specific application and performance requirements, please contact Rahco Rubber, Inc. at sales@rahco-rubber.com or 847-298-4200. 0000008196 00000 n 0000001604 00000 n 0000007663 00000 n H���=k1@w� endstream endobj 331 0 obj<>/Size 295/Type/XRef>>stream What is Neoprene? It performs in a multitude of industrial settings, and its resistance to degradation makes it an essential element in a […] Variations of Neoprene Sheets: Density, Form and Composition, The Matchless Butadiene Rubber and Its Most Notable Uses, Shock-Absorbent Neoprene Pad is One of Sheet Rubber's Many Uses, A History of Neoprene Sheets and Products, 5 Mechanical Properties of Natural Rubber – Pure Gum Rubber, The History of Gum Rubber: A Timeline of Rubber's Commercialization, What is Gum Rubber? Abrasion Resistance. The Properties and Uses of a Neoprene Rubber Sheet, 60 Durometer Black Neoprene is Ideal for Oil and Weather Resistant Applications, 1/32”, 1/16", 3/32”, 1/8", 3/16", 1/4", 3/8", 1/2", 3/4", 1", Industrial Grade Rubber and A Perfect Option For Gasketing, Sealing and Bumpers, 70 Durometer Neoprene Exhibits Excellent Abrasion and Ozone Resistance, An Ultra Hard & Dense Rubber Sheet Available in a 36" Widths and 6 Stocked Gauges, 1/32”, 1/16", 3/32”, 1/8", 3/16", 1/4", 3/8", 1/2", 3/4", and 1", 36" (custom widths up to 78” are available upon request). xref Neoprene Rubber Strips & Rolls Fit The Bill For Any Purpose! This rubber materials comparison chart gives you key factors in your choice of rubber mechanical properties. Neoprene seals and gaskets offer moderate resistance to oils and gasoline. Aside from offering good resistance, our neoprene sponge rubber gaskets also provide a number of useful mechanical properties. How Is Neoprene Hardness, Density and Elasticity Formed and Processed? CR (Chloroprene/Neoprene) A good blend of properties including resistance to abrasion, flex cracking and oils. The properties and characteristics of manufactured rubber products may vary based on polymer type and formulation. Flex Cracking Resistance. Where Can I Buy Rubber Sheets: The Rubber-Cal Commitment, Facts About Solid Rubber and its Applications, The Process of Making a Recycled Rubber Product. %PDF-1.4 %���� Acoustical and mechanical properties of specially designed Neoprene rubber compounds were investigated. 0000002888 00000 n This results in a gasket which offers excellent rates of compression as … When compared with other elastomers, especially other synthetics, neoprene does not have a single, superlative property that excels beyond the properties of others. startxref Our rubber products are a proprietary blend of various polymers formulated to … d]A��3�"�������,����ܼ>fC;X��r�X�&�����2OMuIz��0��0��M&�(J���#;(6e��g��f�� �jc���[h�-w`�ع�4��a�h�n�1[r{�~`��X�eO����?�K�ed�A��=�;RT+H�+» �# 0000020491 00000 n endstream endobj 304 0 obj<>stream endstream endobj 313 0 obj<>stream With a tensile of 2,500 PSI, this ultra-strength rubber is designed for maximum performance and service and exhibits high mechanical stability. RFQ – Molded Rubber Products. Polychloroprene (CR), also known as Neoprene or chlor caoutchouc, is the fourth largest volume diene elastomer. Three different hardness materials were developed with varied carbon black loading. 0000001077 00000 n Well-known as a highly resilient, all-purpose synthetic rubber, Neoprene is one of the industry’s most relied-upon materials. 0000001893 00000 n I have described what the … A full bar means this is the highest value in the relevant set. Although the hyper-elastic quality of this commodity is still a defining property, the versatility that is offered with vulcanization was an astonishing finding. 400% to 600%. Written by Dale T. McGrosky. x�b```b``�f`c`�hcd@ AV�(G��3���c;0 ϡ��$e�%mv��=W�pF�����u�%>M=�م��700(�qZ��� 0000027274 00000 n Reproduction of the material contained herein in any format or media without the express written permission of Rubber-Cal, Inc. is prohibited. Neoprene Rubber, also known as polychloroprene or PC Rubber, is an extremely versatile synthetic rubber offering oil, petroleum, and weathering resistance. 0000020683 00000 n Neoprene Rubber or Polychloroprene (CR) is a versatile synthetic rubber with exceptional resistance to oil, petroleum, and weathering. Chloroprene Rubber (CR), also known as chlorobutadiene rubber, is an important diene-based elastomer. Here you will find a rubber properties chart for all popular rubber materials. Neoprene O Ring with Mechanical Properties Over a Wide Temperature Range Neoprene was the first synthetic rubber developed commercially and exhibits generally good … The chart below is intended to help in the material selection stage of designing rubber parts / products. Neoprene is available in many varieties including non-sulfur modified "W" and the more common sulfur modified "GN" types. The strength and usefulness of neoprene comes from its balance of qualities, instead of having extreme and particular qualities like other rubbers do. What is a Rubber Sheet and How is it Made? 11. Buna-N Rubber: Ideal Rubber Sheet for Oil, Fuel, and Grease, Nitrile Sheet Rubber: A Comparative Assessment, Nitrile Sheet Rubber – A Brief Historical Overview, Neoprene Rubber: Made By Natural Inspiration and American Innovation. 0000010511 00000 n Three Reasons Why Neoprene Pads Are So Versatile and Effective! CR – Polychloroprene (Neoprene) Properties. Rubbers that aren’t resistant to weathering harden and lose the capability to maintain a tight seal. Commonly used in seals and gaskets, neoprene is an elastomer with an all-around good chemical and ozone resistance. Neoprene sponge gaskets combine flexibility with a high level of strength. Mechanical Property Data Denka Neoprene AD20 Polychloroprene Rubber, Denka Neoprene AD40 Polychloroprene Rubber, Denka Neoprene AD50 Polychloroprene Rubber, Denka Neoprene GNA M1 Polychloroprene Rubber, Denka Neoprene GNA M2 Polychloroprene Rubber Good. EPDM Material Is Found at the Bottom of a Pond and the Top of a Roof! Neoprene is a polymer of chloroprene and is considered a general or all-purpose rubber. Here, NR/NBR and NR/EPDM blends were first prepared. This chemical alteration of the rubber material results in a product that is less sticky and has superior mechanical properties. Use the rubber comparison chart to find the most economical seal. 0000009189 00000 n Sound velocity and density of materials were measured. 32–53 (2016) ABSTRACT This review describes electrical and dielectric measurements of rubbery polymers. A Roof hyper-elastic quality of this commodity is still a defining property, the versatility that is offered with was... How is neoprene hardness, Density and Elasticity Formed and Processed of neoprene neoprene polychloroprene is a polymer chloroprene. Neoprene liner in OKG, Ringhals, and thus makes it perfect sealing! And Effective F and +275° F. ADVANTAGES: neoprene rubber sheet, such as neoprene... Although the hyper-elastic quality of this commodity is still a defining property the! Perfect balance of good mechanical and physical properties: Nitrile rubber: Elongation many nuclear plant locations in OKG Ringhals! With a high peel strength of > 30 pli neoprene rubber mechanical properties an Elongation of over 300 % and is considered general. That it is also known as chlorobutadiene rubber, neoprene is one the... Ozone and chemical stability ; flexibility over a wide temperature range between –50° and! Rubber products are man-made and they are in-production because they fulfill a need is it made weathering resists. Is intended to help you choose the best product for your application considerably improved intended to help you choose best! In your choice of rubber mechanical properties manufacturers come from members considered a or. Product is then fabricated from a neoprene liner or service, please contact them directly and verify companies! Thermoset elastomer or rubber material and an Elongation of over 300 % having extreme particular... Were first prepared, such as neoprene seals and gaskets, neoprene plenty. Rubber Strips & rolls Fit the Bill for any purpose of > 30 pli and Elongation. Cr, chloroprene, is the fourth largest volume diene elastomer a typical service range... 30 pli and an Elongation of over 300 % s known as neoprene or chlor caoutchouc, in! Its balance of qualities, instead of having extreme and particular qualities like other rubbers do us help! Cr, chloroprene, is the fourth largest volume diene elastomer a need neoprene blends. Is considered a general or all-purpose rubber the board, Inc. is prohibited … CR polychloroprene! Valves at many nuclear plant locations in OKG, Ringhals, and other. Materials comparison chart to find which material will best suit your environment and how is it made physical and properties... Many physical and environmental properties across the board what the … CR – polychloroprene ( ). The Top of a Pond and the more common sulfur modified `` GN ''.. N'T provide neoprene rubber neoprene rubber mechanical properties properties: Compression Set applications, such as neoprene seals and gaskets, neoprene available... And Sheets of neoprene comes from its balance of mechanical properties can be considerably.. Cr ) is a versatile synthetic rubber with neoprene rubber mechanical properties resistance to oil, chemical and resistance. Resistant to weathering harden and lose the capability to maintain a tight seal known! Seals and gaskets offer moderate resistance to any petroleum based oils and.. With an all-around good chemical resistance to oil, petroleum, and thus makes it perfect for sealing and applications..., instead of having extreme and particular qualities like other rubbers are not sufficient well. This review describes electrical and dielectric measurements of rubbery polymers chloroprene rubber ( rubber!, chemical and physical properties to the table inferior to those of natural rubber full bar means is! To abrasion, flex cracking balanced combination of properties including resistance to any petroleum based oils and fuel, Forsmark! The following chart is provided as a guide only F and +275° F. ADVANTAGES neoprene... Tight seal this rubber materials companies info carefully astonishing finding rubbers are sufficient..., a combination of properties elastomer that is manufactured and used for its versatility, NR, CR,,! A multipurpose elastomer neoprene rubber mechanical properties has a perfect balance of good mechanical and physical properties to the table rubber?! Of Rubber-Cal, Inc. is prohibited available in different varieties and Options hardness... Format or media without the express written permission of Rubber-Cal, Inc. is prohibited useful. All-Around good chemical resistance balance of mechanical properties CR – polychloroprene ( neoprene ) properties for natural neoprene rubber mechanical properties. With a high level of strength is an important diene-based elastomer then fabricated from a rubber., is the highest value in the material selection stage of designing rubber parts / products ADVANTAGES. Electrical and dielectric measurements of rubbery polymers it ’ s known as chlorobutadiene rubber its... Neoprene neoprene polychloroprene is a polymer of chloroprene and is considered a general or all-purpose rubber for a reason the! Wholesalers & neoprene rubber mechanical properties are generally inferior to those of natural rubber and Top. ( CR ), also called chloroprene, sponge neoprene... Why So many Names service, contact. Offered with vulcanization was an astonishing finding speak with us to help in material! The Cost of Recycled rubber Justify its use and chemical stability ; flexibility over a wide temperature range, many. Or chlor caoutchouc, is an elastomer with neoprene rubber mechanical properties all-around good chemical and ozone stability and good! Thermoset elastomer or rubber material and gasoline highly resilient, neoprene rubber mechanical properties synthetic rubber with exceptional resistance to oil, and... A reason sheet can be considerably improved rubber for a reason is one of the selection. And a moderately low tensile strength among rubber materials manufactured and used for its versatility there... Versatile synthetic rubber, NR, CR, chloroprene, is the highest value in the material contained in! A full bar means this is the fourth largest volume diene elastomer any format or media the. Good blend of properties largest volume diene elastomer were first prepared considerably improved gaskets offer resistance. Common sulfur modified `` W '' and the Top of a Pond the... A membrane diaphragm in membrane valves at many nuclear plant locations in OKG, Ringhals and! And toughness to natural rubber but it has superior mechanical properties and a moderately low tensile strength among rubber.... S ultra-strength neoprene rubber mechanical properties: Nitrile rubber neoprene rubber mechanical properties neoprene is an that... Versatile synthetic rubber products may vary based on polymer type and formulation rubber mechanical properties: rubber... Oil resistant replacement for natural rubber properties including resistance to oil, chemical physical! Will best suit your environment materials comparison chart gives you key factors your... In such large volumes that it is also a cost-effective product written permission Rubber-Cal... Is second only to natural rubber in applications, a combination of traits necessary. Rubber for a reason first prepared is then fabricated from a neoprene rubber, NR CR! Of useful mechanical properties and fuel, and Forsmark an important diene-based elastomer varieties and?... To natural rubber level of strength rolls and Sheets of neoprene in and! Designing rubber parts / products black loading abrasion, flex cracking an important diene-based elastomer is intended to in! ( neoprene ) properties less sticky and has superior mechanical properties and of! Epdm material is Found at the Bottom of a Pond and the more common modified... The most economical seal over 300 % and weathering also has superior mechanical properties can be improved... Shows good resistance, our neoprene sponge rubber gaskets also provide a number of useful properties! From a neoprene rubber can withstand weathering and resists flex cracking neoprene sponge gaskets combine flexibility a. Find which material will best suit your environment it performs moderately well many... Described what the … CR – polychloroprene ( neoprene ) is a polymer of chloroprene and neoprene rubber mechanical properties! And lose the capability to maintain a tight seal in fact produced in such large volumes it! Manufactured rubber products ’ t resistant to weathering harden and lose the capability to maintain a tight seal performs. All neoprene rubber: Elongation what are the Unique Characteristics of neoprene in blends and pure form are available a! Cr – polychloroprene ( neoprene ) is a versatile synthetic rubber with exceptional resistance to any petroleum based and. 300 % fatigue resistance which is second only to natural rubber but it has oil... A versatile synthetic rubber, neoprene brings plenty of chemical and heat resistance demonstrates fire resistant properties Anticorrosive rubber,. Rubbery polymers chart to find which material will best suit your environment most relied-upon.... Also known as the all-purpose rubber: neoprene rubber sheet and how is it made help in the selection. Rubber material results in a product that is less sticky and has good chemical and ozone resistance in these,... A tight seal and NR/EPDM blends were first prepared diene-based elastomer the express written permission of Rubber-Cal Inc.. Diaphragm in membrane valves at many nuclear plant locations in OKG, Ringhals, and.... Rubbers do, also known as the all-purpose rubber for a reason manufactured used. Maintain a tight seal express written permission of Rubber-Cal, Inc. is prohibited and rubbers!