Solid Teflon Back-Up Ring, Size -220
Teflon
Buna 90 Duro Back-Up Ring, Size -121
Buna 90 Duro Back-Up Ring, Size -133
Buna 90 Duro Back-Up Ring, Size -124
Buna 90 Duro Back-Up Ring, Size -145
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Buna 90 Duro Back-Up Ring, Size -224
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