[PSUBS-MAILIST] Conning tower hatch O-Ring

[Alan James via Personal_Submersibles]

Hi Mark,
I have heard of people with the square grove having trouble with the O-ring falling out, & having
to stick them in with copious amounts of grease. That could be a sizing issue though.
I think it's a 1/2 dove tail grove they have on the K boats with the angled edge to the outside so that
the O-ring is squashed by external pressure against the flat side of the grove.
(someone correct me if I'm wrong)
I vaguely remember Phil saying the Deep Workers have the 1/2 dove tail grove.
Alan





________________________________
 From: via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org 
Sent: Monday, October 20, 2014 1:03 PM
Subject: [PSUBS-MAILIST] Conning tower hatch O-Ring
 

Hello Psubs group,

I would like to ask the group where I can purchase an O-Ring for a 24" conning tower hatch ring.  I also need to mill the slot in the hatch ring and would like to know the width and depth of the slot.  I've heard some folks recommend a dove tail slot for the O-ring. 

Many thanks for your advise.

Mark...
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