1 pk TCM 171255TC-BX NBR/Carbon Steel Oil Seal, TC Type, 1.719" x 2.561" x 0.5" (Copy)
$ 7.50
TC seals feature an additional secondary lip that acts as a dust lip. This secondary lip provides enhanced protection preventing dust, dirt, and other hazards.
TB seals have a single sealing lip and don't provide the enhanced protection.