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Sioux 3X O-Ring Size and Material

BMC_Dave

Well Known Member
Anyone know what specific size and type of o-rings the Sioux 3X rivet gun uses? The three identical ones inside the trigger assembly that is...

My gun was leaking air and it turns out these o-rings are shredded. I measured them and they appear to be 0.07" thk by .562" OD but it's really hard to get an accurate measurement. I'm also assuming they're buna N? I ask because I might have some at work that I can use, rather than wait to get them in the mail...

The VAF member I bought this from claimed it worked fine for him, seems unlikely given the damage. So that's nice...

ETA:

Parts list says .438IDx.063" for $2.80 each, no material listed.
 
Last edited:
Based on those numbers, a -013 is the closest size. Buna should be fine, it's only sealing air and oil.
 
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