You are reading a single comment by @hiraethus and its replies.
Click here to read the full conversation.
-
Search for 'O Ring Cord' but check chemical compatibility of whatever material you pick depending on the fluids you're sealing against. Probably nitrile/NBR/HNBR for engine oil but silicone and Viton/FKM may be ok too. If you need to make a continuous loop you can superglue the cut ends together.
The thickness of the material should be more than the depth of the groove by 20-30% but it depends on o ring material hardness and the stiffness/fixing arrangement of the cover.
hiraethus
I need an oring type gasket for an oblong inspection cover on an engine. I can’t find one for sale but it should be possible to just buy a length of the oring material and push that into the groove right, what would you search for though? And is there a generally accepted formula for working out what thickness of o ring you’d use for a given size of groove?