Solid Teflon Back-Up Ring, Size -220
Teflon
Buna 90 Duro Back-Up Ring, Size -137
Buna 90 Duro Back-Up Ring, Size -136
Buna 90 Duro Back-Up Ring, Size -019
Buna 90 Duro Back-Up Ring, Size -020
Buna 90 Duro Back-Up Ring, Size -236
Buna 90 Duro Back-Up Ring, Size -116