Quick question. The bonnet nut oring appears to be a -015 but the one in the valve is thicker resulting is a slightly larger OD (but same ID as 015), What am i missing? Does the thicker oring have a different designation. I used an oring size chart but no cigar. In the pic the upper oring is the one currently in the valve. The bottom one is a 015. Thanks for all input. I ain't no engineer. Mark.
UPDATE: Answered my own question. Looks like its a 113. Anyone out there have an extra i could buy off you? Otherwise I'll just order a pack of 'em online. Mark
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"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968)