Sheet Rubber Specialists

WARCO is a leading diversified, vertically integrated manufacturer of organic and inorganic elastomer products. WARCO proudly executes on its heritage as the premier domestic producer of commercial, as well as custom, application-specific engineered sheet rubber products; stocking a broad line of thin gauge and heavy sheet rubber products – including specification grade (Military, ASTM, AMS) and commercial unsupported sheet rubber, cloth-inserted, PSA Ready, FDA, chute lining, and Thermoplastic Elastomer (TPE) product offerings available for immediate shipment from our California warehouse facilities.

We offer our sheet products in thicknesses ranging from 1/64 inch to 4 inches; in standard widths of 36, 48, and 55 inches, in either trimmed rolls, untrimmed rolls or molded sheets. Our manufacturing capabilities include custom mixing and compounding, calendering, custom dimensions, color matching, stenciling, private branding, slitting and a variety of finishes including smooth cellophane finish, matte finish, paper finish and fabric finish.

All of our rubber sheeting products meet RMA Standard Specifications; however, very tight tolerances can also be met. With thousands of sheet rubber formulations, you can order the materials you need for any environment or application including products that meet DOD and Military, AMS, ASTM, NSE, NSF, FDA and many more specifications. Or we can work with you to develop and manufacture a product that will meet your specific needs and applications; with the confidence of knowing that at each step in the process, WARCO’s ISO approved quality systems ensure the highest product quality.

Black Rubber Sheet Roll That Is Starting To Unroll
Closely Stacked Rubber Sheets of Various Colors Die Cut Into Circles

Our Sheet Rubber Products

Our high-quality, spec grade and commercial lines of sheet rubber are available in several grades of Nitrile (Buna-N), EPDM, Neoprene, Silicone, Natural Rubber, SBR, INFINISIL™ Silicone, CSM (Chlorosulfonated Polyethelene/CSPE/Hypalon), Thermoplastic Elastomer (TPE), Hydrin, Butyl and Fluorozone® and Viton® Fluoroelastomer FKM.

Select a sheet rubber product below to learn more.

Neoprene Rubber

Nitrile Rubber

EPDM Rubber

FKM (Viton™) Rubber

Silicone Rubber

Natural Rubber

SBR Rubber

Spec Grade Rubber

Our Sheet Rubber Manufacturing Process

The process begins with our experienced sales representatives working with your business in order to assist in product development. Once the product’s needs, applications, and timeline has been determined, the request is sent to our Research & Development Lab. In our Research and Development Lab, our team of chemists and engineers will create a custom formulation that will best fit the determined requirements. Our commitment to research and formulation development has kept us at the leading edge of rubber technological innovation.

This formulation is then sent to our In House Mixing undergoes the first Quality Assurance Check.

Our mixing team receives the new formula and begins to carefully prepare the material for mixing. All formulas is mixed with our Banbury© machine and thoroughly tested before it is used in manufacturing in order to make sure that we are delivering excellence in quality. Our testing facility checks all physicals of the batch in order to ensure that you receive excellence in quality. After the rubber compound batch has been formulated, mixed, and tested, it is now able to move to our compound and mix stock room to begin the manufacturing process.

The rubber material or stock, is taken to a horizontal mill where it is prepared to enter the vertical calendering machine. The mill breaks down the stock into smaller pieces which allows the calendering process to be executed smoothly and in an efficient manner. The milled stock is then inserted into the vertical calendering machine where our operators adjust the machine in order to create a specific product that will fulfill your application. The calendered sheet is now transferred to the pre-vulcanization preparations area. 

The uncured rubber is then subjected to a number of different preparation procedures in order to ensure that this final product is high quality. This preparation includes setting the finish style upon the material, our finishes include smooth, rough, lined, and more.

The prepared sheet rubber is placed into an Autoclave where it undergoes vulcanization. This process allows for the rubber molecules to cross link ensuring that the rubber retains its shape indefinitely. In the autoclave, precisely measured amounts of heat and pressure are applied to the rubber. Our team is constantly aware of how much time and pressure is needed for each product.

WARCO offers a number of different services to certified rubber in order to create the most optimal product. These services include stenciling, company branding implementation, division of the sheets (coils) , edge trimming, and much more.

At this point, our packaging and shipping department prepares the rubber for transport. Each of our products are packed with extreme care and precision in order to ensure that your product is delivered to you in pristine condition. These products are given to our partners within the transportation industry and they deliver directly to wherever your desire.

Custom Sheet Rubber Products

WARCO has been the source of a number of different custom formulations (over 4,000) and a variety of unique and diverse products. Our legacy of over 110 years in rubber manufacturing has allowed us to become true experts in sheet rubber manufacturing. Even if you do not know how our rubber can fulfill your application, our team has been trained to assist you and determine how our products can solve your problem. To get started, you can fill out the form below or contact a sales representative.


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Fluorozone® is a registered trademark of West American Rubber Company, LLC. All rights reserved. Viton™ and any associated logo is a trademark or copyright of THE CHEMOURS COMPANY FC, LLC used under license by West American Rubber Company, LLC. INFINISIL® is a registered trademark of West American Rubber Company, LLC.

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained, since the conditions of the use and application by Buyer and others are beyond Seller’s control.

View complete Terms & Conditions of Sale for suitability of use and formulations