This listing is for a TCM 35X8 EC Cap.
OD is 35mm and Depth is 8mm.
These are also called: Oil Seal, End Cap, Cover, Plug Seals, Blank Off Seal, Static Seal.
Clarification for search engine crawlers: TCM 35X8 is not a clothing item, it is an oil ‘cap’ or plug for a gearbox.