The machinist called me over and asked me to help him design an o-ring groove. We looked up a chart at
It's clear that for nominal 1/4" (actual width .275 ± .006) the gland depth (dim. L) is .226-.229.
But on the chart, it seems to indicate that the groove width, G, for a nominal 1/4 width, is .375-.380, which he thinks (and I tend to agree, but I'm not the machinist - I just draw the pretty pictures) is too wide and the o-ring would flop around or something. He thinks the groove width should come from the line above, and be .281-.286.
Anyone got the definitive answer for that?
Thanks 10E9 in advance! Rich