WaterArmor WPM Mixing Valve Seal is made from WaterArmor™ Sheet Membrane specially shaped to provide waterproof seals around Mixing Valve-stem(s) with very low memory to reduce seams in the shower.
• 4" diameter rubber gasket
• Provides 2 1/2" overlap ring
• 20 mils thickness
• Meets ANSI A118.12 for Crack Isolation Membranes