Steel Neoprene EPDM Bonded Sealing Washers

The Steel Neoprene EPDM Bonded Sealing Washers is mainly composed of a metal frame and a chloroprene rubber sealing body, and is permanently bonded together through a special process.

【1】Metal framework

（1）Galvanized/Zinc-coated steel

An economical choice. The zinc coating provides basic rust prevention capabilities and is a compromise between cost and performance. However, the coated Steel Neoprene EPDM Bonded Sealing Washers has the risk of peeling off, and its service life is also relatively limited.

（2）Stainless Steel (304)

Its corrosion resistance is far superior to that of galvanized steel. It is widely used in humid environments and outdoors, and is the standard choice for stainless steel.

（3）Stainless steel (316)

This one has molybdenum in it, so it holds up better against salt spray and rust. That's why it's a good pick for marine use or really harsh environments.

（4）Other metals

Some designs go with aluminum to make the Steel Neoprene EPDM Bonded Sealing Washers lighter. Others use copper when you need good electrical or heat conduction.

【2】Rubber sealing body

（1）Chloroprene rubber

The main sealing material, it has excellent oil resistance, wear resistance, anti-aging and anti-odor properties, and can effectively fill the gaps to achieve a tight watertight and air-tight effect.

（2）Other rubbers (optional)

According to specific requirements (such as high temperature resistance, chemical corrosion resistance), other materials such as nitrile rubber (NBR), ethylene propylene diene monomer rubber (EPDM), fluorine rubber (FKM/Viton), etc. may also be selected.

【3】Adhesives and coatings

（1）Special adhesives

After the metal processing, a base coat and a top coat will be applied to ensure that the rubber can form a permanent and inseparable chemical bond with the metal during the vulcanization process.