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immichael2
0
May 20, 2014
What size are those o-rings on the pen?
Doug-0
7
May 20, 2014
immichael2It's a standard 010 o-ring, according to Mike in the Kickstarter comments.
Doug-0Yep -- That's correct 010. You can buy them through McMaster-Carr. The Flourosilicone versions are blue, silicone is red, high temp is green and Buna is black.