I found another parts manual; this one lists actual o-ring sizes instead of Alkin part numbers. The o-ring is part no. 6893.06 and listed as metric size: 28.17x3.53 NBR. This appears to be AS568 ('standard') size 216, which I have. I compared both the old one to a new 216 and they are identical.
Just wondering if I should give it a light lube before assembling, as it is 'kind of' a moving part, at least until the cap is tightened.
Just wondering if I should give it a light lube before assembling, as it is 'kind of' a moving part, at least until the cap is tightened.