Sizing an oil seal?

bricol · Oct 20, 2020

Gwil said: ↑

Blimey! Thanks. Loads of good advice. The problem here is that certainly sidecarpro or a number of other stockists will send from China, but things can disappear into Customs here, eventually to reappear a long time later, accompanied by a bill of arbitrary and sometimes astonishing size. Good idea to talk to a suspension specialist- I've done that before for fork springs, rebuilt shocks etc.

I see though that equivalents should be possible. The question I still ask is, for example, were I to build a machine with specifically sized shafts, is there a convention which dictates the internal size of the seal, eg. 38mm for a 40mm shaft? Or, maybe, do I buy based on the exact measurement of the shaft? I was wondering whether there was a percentage 'nip' for want of a better word, which is always applied?

Or, maybe I think too much.....
Click to expand...

there is - hence my suggestion to go to Trelleborgs site - they make seals for all applications.

RichardM · Oct 20, 2020

Buy the seals for the dimensions you have. 40mm seal for 40mm stanchion, OD and width to suit slider dimensions. The actual seal will have a smaller ID, width probably as dimension and OD just slightly bigger to press into the seal holder.

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Sizing an oil seal?

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Sizing an oil seal?

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