McMaster 94708A517 Galvanized Steel and Neoprene Bonded Sealing Washer, Pack of 50, for 1/2" Screw Size, 0.532" ID, 1" OD, 0.086" to 0.116" Thick G4531676 Relief Valve Stem O-Ring Compatible

Relief Valve Stem O-Ring Compatible with Series RK-919 Compatible Manufacturer Model Number 919

Tool Cribs

Paintable Yes

Lock and keys included

McMaster 94708A517 Galvanized Steel and Neoprene Bonded Sealing Washer, Pack of 50, for 1/2" Screw Size, 0.532" ID, 1" OD, 0.086" to 0.116" Thick G4531676 Relief Valve Stem O-Ring CompatibleThese washers create a stronger seal than metal or rubber alone to lock air and fluid in, while keeping dust and contaminants out. The flexible rubber layer compresses to fill gaps, while the metal backing stops the washer from squeezing through the hole. These washers are a great solution if you have a hole larger than your fastener that you need to seal. Reuse them a handful of times, as long as the material isn't damaged. Galvanized Steel and