The EPDM Washer on the Bonding Washer is a low-cost weather resistant rubber and can withstand up to 275°F.
Although EPDM rubbers are the most common, there are other types of rubber also made for similar purposes, such as neoprene and silicone.
Bonding Washers are mostly made to pair up with Roofing Screws.
They are installed before the color coating process to have the same coating as the screw.
The installation for screws with Bonding Washer is not as easy as it seems.
The incorrect installations of the screw will give insufficient or excessive tightening to the Bonding Washer.