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Old 10-22-2011 | 06:33 AM
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joeflyer
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Default RE: Old BVM Hot O Ring seals
For my BVM 91's I used number 115 o-rings. I had a BVM 82 years ago and am pretty sure it took the same size.

A #115 is 11/16" ID, 7/8" OD, and 3/32"W. Like rcand said make sure you get Viton.

Joe
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