O-Ring, ID: 0.5", W: 0.1"

O-Ring. Package of 5. I.D.: 0.500" or 12.7mm. Width: 0.100" or 2.5mm. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. Package of 5 I.D.: 0.500" or 12.7mm Width: 0.100" or 2.5mm Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty