Bonded neoprene washers (also known as sealing washers and cushioning washers) are a specialty washer designed to create an airtight seal between the bolt/nut assembly and the sheet metal used for the bolted water tanks. They are usually produced in steel with hot dip galvanized or stainless steel.

Tengco can supply virtually any special formed or assembled part required for the storage tank industry.All our storage tank hardware is manufactured to NSF, ANSI, SAE standards and our bonded round washers are sealing washers that combine a single piece of metal and neoprene sealing washer. The metal side absorbs the pressure of the screw while the neoprene side forms a tight water-resistant seal. These bonded round washers are rust resistant and perfect for your storage tank needs.