Neoprene EPDM Washers are designed to be used with sharp point and self-driller TEK sheet metal screws to create a watertight seal around the screw and the metal roofing or siding. Used to fasten metal roofing and metal siding to metal or wood studs or truss systems, providing a secure connection. Also known as sealing washers, these parts create a water-tight seal and help prevent corrosion. Backed with 100% 18-8 (304) stainless steel washers, these EPDM neoprene washers offer high corrosion resistance and longer life than many other hardware options on the market today. Key benefits and attributes - Function: provides a watertight seal around fasteners and panels, reducing leaks. - Compatibility: designed for TEK self-drilling screws used in metal roofing and siding. - Material: EPDM neoprene washers paired with 100% 18-8 (304) stainless steel washers. - Performance: corrosion resistant, durable, and suited for exterior metal roofing and siding installations. - Application: ideal for attaching metal roofing and metal siding to metal or wood studs or truss systems. Use scenarios - New metal roof installation: fasten panels with TEK screws, using these washers to seal around each screw and prevent water intrusion. - Metal siding on wood or metal framing: secure panels to studs or trusses while maintaining a watertight seal and corrosion protection. - Exterior retrofit or repair: upgrade existing fasteners with these washers to improve sealing performance and long-term durability in exposed environments.