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Re: pressure build-up ring

Subject: Re: pressure build-up ring
From: "" flawn1951
Date: Wed Oct 22, 2008 5:43 am ((PDT))
Mike Feldman wrote:

> <<The ring in question is really a ball or sphere, right?>>
> 
Nope. The MKH20 ring is a flexible flat-sided rubber washer whose inner 
diameter is the diameter of the MKH20 head and whose outer diameter is maybe 
1/4" 
larger. It's about 1/4" thick.





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