david mccandless wrote:

Hi Paul, I have been following the O ring trail for some time now and would appreciate clarification on your point about specifying  cross section dia as .093" and not 3/32".   Decimalised 3/32 is
.09375 ie 094"and the catalogue gives the manufacturing tolerance as plus or minus .005 ", so 093 rings can have a cross section dia between .088 to .098 , so this falls well within 3/32 sizing.
Is it that when you order '.093' rings you get a different product than when you order 3/32 rings?   What goes here?
BR, Dave McC

Yes you do. 

I think it also depends on who you order them from. I have measured a so called
"3/32" O-ring as high as .115. If you buy some from somebody other than Creavey measure
them before you install them. This is critical. A too large silicone cross section 
O-ring can crack the cast iron when over heated.
 
Paul Lamar
 
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