EPDM Bonded Sealing Washers

Material: Stainless Steel 304,rubber

Shape: Circle

Metal Thick: 0.8mm +/- 0.1mm

Rubber Thick: 2.0mm +/- 0.2mm

Color: Black or Gray

Packing:  Small box or bulk in carton with or without pallet

Service: OEM/ODM is accepted


  • Description
  • Inquiry


EPDM bonded washers gasket structurally consists of two elements – steel washer and gasket made of ethylene propylene diene monomer, one of the types of synthetic weather-resistant durable rubber EPDM, which has high elasticity and stable consistency during pressing.

EPDM (Ethylene Propylene Diene Monomer): It is an outdoor elastomer, an elastomer for outdoor applications that requires weather resistance and water resistance. At the same time, EPDM has excellent resistance to ozone, ultraviolet rays and sunlight. Therefore, EPDM compounds are usually developed using sulfur or peroxide curing systems.

Dimension drawing

TypeOuter Diameter DInner Diameter DCInner Diameter BThickness H±0.1Thickness HC±0.2


Correct Installation

  • Please tighten the surface, the seal flows inward to seal the smaller fastener diameter and surface.
  • Do not over-tighten and over-tighten, otherwise it may cause leakage under the seal and around the fastener, and cause the tray to fall.
  • Note: Leakage under the seal is also possible

EPDM Bonded Sealing Washers


  • EPDM benefit is not to pollute the runoff rainwater.
  • EPDM gasket does not change its shape over a long period of time, which ensures perfect tightness.
  • Quality elastomeric compounding to meet specifications for elasticity,It has the ability to retain a light color.
  • Excellent conductive performance for powder painting screws.Reduce the failure painting risk.
  • EPDM properties are its outstanding heat, ozone, and weather resistanceand sunlight resistance.
  • EPDM has minimal temperature deformation and retains basic performance in the temperature range of −40°C ~+90°C.


EPDM gaskets are the most effective gaskets to prevent roof leakage. So the sealing gasket helps to seal the joint, prevent leakage, and can provide cushioning under the head of the bolt or nut. Combination washers are used in combination with washers. The manufacture of rubber gaskets is very precise.The washer ensures a perfect fit because the rubber material will not slip.

The most common area of application: the attachment of roll and sheet materials for external,such as roofing, work.