Solid Teflon Back-Up Ring, Size -021
Teflon
Buna 90 Duro Back-Up Ring, Size -138
Buna 90 Duro Back-Up Ring, Size -124
Buna 90 Duro Back-Up Ring, Size -225
Buna 90 Duro Back-Up Ring, Size -015
Buna 90 Duro Back-Up Ring, Size -019
Buna 90 Duro Back-Up Ring, Size -020