Bonded Sealing Washers

Bonded sealing washers are composed of a soft rubber layer securely bonded to a metal backing, usually made of zinc-plated, galvanized, or stainless steel. This bond is achieved through a combination of heat and pressure, ensuring durability and strength. The rubber element—typically made from materials like neoprene or EPDM—flexes under compression, creating a reliable, leak-resistant seal against a wide range of fluids and gases.

Adfast Component manufactures bonded sealing washers in both metric and imperial specifications, catering to diverse industrial sealing applications.

Sealing Washers

Specifications

FormingHot & Cold Forged
Metric SizeM6 to M100
Imperial Size1/4″ to 4″
ThicknessStandard and Custom
StandardsDIN, ASME, ISO & IS
Variants 
Dimension StandardsNo applicable Standard available
Materials
Zinc SteelGalvanized Steel or Stainless SteelNeoprene
EPDMNatural RubberPolyurethane
ASTM Specifications
ASTM A36ASTM A167ASTM A240
ASTM A283ASTM A387ASTM A516
ASTM A572ASTM A829ASTM A633
ASTM A656ASTM B127ASTM B162
ASTM B171ASTM B209ASTM B424
ASTM B463ASTM B551ASTM B749
ASTM B755  
Coatings