## Shaft seals [[Ulvac G100 rotary vacuum pump rebuild]] > For more info, see https://www.globaloring.com/oil-seals/ > Decoding shaft seal part numbers: > > **TC-17-40-9** = > Style: TC > Shaft OD (seal ID): 17 mm > Bore ID (seal OD): 40 mm > Width: 9 mm HTC = Functionally equivalent to TC ![[Pasted image 20220120142746.png|400]] ![[Pasted image 20220120142703.png|700]]