Miller 197123 O-Ring.312 Id X .062 70 Duro Buna-N, Pack of (5)Upgrade your welding setup with the Miller 197123 O Ring, a precision engineered component designed for durability and performance in MIG welding applications. This O ring features a 0. 312" inner diameter and a 0. 062" thickness, with a 70 durometer rating that provides excellent resistance to wear and tear. It is crafted from Buna N, a high performance nitrile rubber, known for its resilience and longevity in a variety of conditions. Perfect for use