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SEALING WASHERS AND RUBBER WASHERSBonded Sealing Washers from Best Materials
We inventory all popular sizes of EPDM Bonded Sealing Washers Neoprene Washers, and flat Rubber Washers. Sealing washer (metal / rubber laminated bonded washers) are available with various materials: metal faces (galvanized steel, aluminum, stainless, or bronze) and rubber types (EPDM, neoprene). An Installation guide is available. Custom tooled items can also be accommodated. You'll find we have the best pricing and delivery.
Questions? We love to help
or Email  sales@bestmaterials.comDekfast Multi Seal Molded Rubber / Metal Sealing Washers, from Best Materials
Or call 1-800-474-7570 or 602-272-8128
You'll get a prompt reply.
Bonded Sealing Washer Size Options
  Bonded Sealing Washer Design Information
  Bonded Sealing Washer Installation Guide
  Bonded Sealing Washer Materials Options
  Molded Rubber / Metal Sealing Washer Options (Multi-Seal)#10 STANDARD EPDM WASHER (1000) - #10 STANDARD EPDM WASHER, 3/8" O.D, .170" I.D.,  0.093" THICK, 70 DUROMETER HARDNESS RUBBER. 1000/BAG. PRICE/BAG.
EPDM Rubber Washer Size Options
Standard Stock Rubber Washers
  Bonded Washers in stock and pricing, list of stocked items
  For items not listed below, email for a quote.

Standard rubber washer thickness is 3/32".
All items are packaged 1000 per poly bag. Available sizes include:
EPDM Rubber Washer Items  <Click on Link for item pricing
(email for pricing on items not yet listed)

Standard thickness is 0.065 for Metal backed washers, and 3/32" (0.093") for plain rubber washers"
(Ethylene Propylene Diene Terpolymer) is an excellent, low-cost ozone and weather resistant elastomer which possesses superior aging characteristics. It is also extremely effective when application requirements dictate heat resistance up to 350º F. Use of EPDM in direct contact with petrochemicals is not recommended. For construction applications where the primary hazards are ozone ultraviolet radiation and temperature extremes, EPDM is the consistent elastomer of choice.
(Polychloroprene), one of the earliest and perhaps best known, of the man-made elastomers is still one of the most versatile facing material for sealing and cushioning washers. When properly formulated it is highly resistant to sunlight ozone weathering and aging while enjoying good memory and elasticity. Although its particular strength lies in its resistance to petrochemicals and certain other chemical families Neoprene is a generalist - performing well in a myriad of applications. When direct contact with petrochemicals is of greater concern than direct U.V., Neoprene will do the job.

Substrate Backing Materials:
Standard thickness is 20 gauge, others are available by special order
GALVANIZED STEEL provides excellent strength characteristics and possesses greater corrosion resistance than a common commercial zinc-plated bolt or screw at the lowest possible cost.

Aztec special alloys provide similar longevity and protection when low-stress or desired deflection requirements exist. For higher stress applications both strength and corrosion resistance may be attained by selection of specific alloys such as 5052-H38. Use of an aluminum Master Seal
® also minimizes concerns of galvanic corrosion in certain applications.

STAINLESS STEEL (Austenitic 300 Series or 18-8/A2) combines the optimum corrosion resistance and lowest cost available in a premium material. Its use is indicated wherever stainless fasteners are required or when a corrosive environment would compromise lesser metals.

316 STAINLESS STEEL (Austenitic 300 Series with Molybdenum/A4) provides the highest corrosion resistance available in standard production materials. due to its higher cost it is specified only in the highest corrosion marine or industrial environments.

Where sealing properties are required, the conical design directs the flow of the elastomeric portion toward the problem areas. Where cushioning or vibration presents a problem, our full-face elastomeric material affords 100% protection.

Features Include: Quality elastomeric compounding to meet specifications for elasticity, memory, temperature extremes, chemical, ozone, and sunlight-resistance.

Conical design directs flow of facing materials to form a seal conforming to both fastener and sealing surface.

Full-face design cushions fragile surfaces and minimizes vibration.

Inside diameter sizes for #4 diameter screw to 1-1/2” diameter bolts and corresponding metric range.

Typical Dimensions: Metal Thickness is 20 Gauge / ~ 0.030 mils, and rubber thickness is 0.066" nominal. Washer assembly is coined to created a total thickness of 0.120 to 0.140, depending on washer size (before torque is applied). Inside diameter of rubber washer is designed to seal tightly to screw.


When installed in a sealing application, the materials in Sealing Washers compress against either a flexible or an inflexible surface to permanently seal in or seal out any operating environment, whether natural or industrial. Facing materials are engineered to provide optimal resistance to weathering from ozone, ultraviolet light and/or chemical agents.

As the washer is compressed and fastened against a substrate, the facing material serves as a permanent cushion. This feature protects the substrate from installation damage (spinning fastener and/or torque) and from vibration damage during the product's life cycle.

Likely to cause leakage under seal and around fastener.

Tight against surface, Seal flows inward to seal minor fastener diameter and surface voids.

Causes reverse dishing. Leakage under the seal is possible.

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Popular Products and Pages:

Adhesives, Backer Rod, Butyl Rubber, Caulk & Sealants, Chem Curbs, Chinking, Concrete Products, Concrete Repair, Concrete Stain & Sealer, Deck Coatings, Deck Hardware, Diamond Saw Blades, Drains, Electric Hot Air Welders, Electric Service Flashings, Eternabond, Expansion Joints, Fall Protection Kits, Fasteners, Fire Stopping Vents, Flashing Tape, Foam Roofing, Gas & Safety Cans, Generators, Hidden, Deck Fasteners, Hot Dipped Roofing Nails, Hot Tar Kettles, Houseboat Roof/Deck Repair, Knowledgebase, Log Home Products, Magnetic Hammers, Metal Roofing, Miami-Dade Nails, Narrow Crown Stainless, StaplesNP1, Polyurethane Foam, Pipe Flashings, Power Tools & Accessories, Propane Hot Air Welders, PVC Roofing, Retrofit Pipe Flashings, Rex Synfelt, Rigging/Lifting Hardware, Rivets, Roof Anchors, Roof Hatch, Roof Leak Repair, Roof Paints & Coatings, Roof Repair Materials, Roof Screws, Roofing Fasteners, Roofing Nails, Rooftop Electrical Flashings, Rope, RV & Trailer Roof Repair, RV Roof Replacement, Safety Rail Systems, Saw Blades, Sealants, Sealing Washers, Snow Guards, Spray Polyurethane Foam, Stinger, Stainless Nails/Fasteners, Tarps, TPO Accessories, Underlayments, Vents, Roof Vents, Video Movies, Waterproofing Products, Wood Deck Hardware

Popular Suppliers Include:

ACRO, Active Ventilation, AES Epoxies, AES Raptor, AJC, Albion, Alcoa/Marson, All Line, Alpha ProTech, American Sealants, Applied Technologies, ASI Products, Attic Breeze, Aztec Washer, Babcock-Davis, BAK Welders, BASF, Berger, Berry Plastics, Biltrite, Brentwood, Brewer, CEP, Chem Link, Cleasby, CME Manufacturing, CPR, Deks, Dow, Eagle, EagleView, Erin Rope, ES Products, Eternabond, Everhard, Falltech, Flame Engineering, Flashco, Foxy, Franklin / Titebond, Fry Reglet, Greenstreak, GSSI, Guardian, Harpster, HY-C, Interwrap, ITP, ITW, Jaaco, JL Industries, Josam, Karnak, Levis, LionGuard, LSP, Lucas, Luco, Makita, Marathon, Marshalltown, Maze Nails, MEC, MFM, Miro, MM Products, National Nail, Natural Light, Newborn, OMG, Pam Fasteners, Pearl, Polar Blox, Polycoat, Portals Plus, Powers Fasteners, Prime Source, ProTech, Protecto Wrap, Pylex, Quarrix, QuickMount, RHH Foam, Robetex, Roofmaster, RoofTop Products, Senco, SFS Intec, Sievert, Simpson Strong-Tie, Smith, Sno Gem, Solomon, Sonneborn, Steelhead, SunRise Solar, Sunset, Super Anchor, Surebond, Swan Secure, TRA, Trufast, United / Quest, Vulcan, Wade, Watts, Weatherbond, Werner, Western Colloid, Winco, Zurn

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