O-Ring, ID: 3.94", W: 0.135"

O-Ring. Qty: Pkg. of 5. I.D.: 3.940" or 100mm. Width: 0.135" or 3.4mm. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. Qty: Pkg. of 5 I.D.: 3.940" or 100mm Width: 0.135" or 3.4mm Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty