[PSUBS-MAILIST] gasket test results

[hank pronk via Personal_Submersibles]

Brian,
No, I have a whole set of brand new ports I am using.
Hank
--------------------------------------------
On Wed, 7/8/15, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] gasket test results
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Wednesday, July 8, 2015, 9:58 AM
 
 Hank,   Is that one of
 my ports you're using to test ?
 
 Brian
 
 --- personal_submersibles at psubs.org
 wrote:
 
 From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
 Subject: Re: [PSUBS-MAILIST] gasket test results
 Date: Wed, 8 Jul 2015 05:35:11 -0700
 
 Also, I was able to do a slide test of the port on the
 gasket.  At 500 psi with grease the port slides
 easily.  Without grease, I could not move the
 port.  To move the port I simply shimmed between the
 loosened air fitting and the port.  After pressurising
 the chamber, I simply tightened (threaded in) the air
 fitting and that pushed the port sideways.
 Hank
 -------------------------------------------- 
 On Wed, 7/8/15, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:
 
  Subject: [PSUBS-MAILIST] gasket test results
  To: personal_submersibles at psubs.org
  Received: Wednesday, July 8, 2015, 8:15 AM
  
  I did my testing this morning and
  found some scary results.  I bonded EPDM gasket
  material to my port test chamber and tested a port to 500
  psi.  The gasket extruded about 1/16 of an inch. 
  When I greased the surface of the gasket and pressured it
 to
  500 psi, the gasket extruded 1/2 inch.  When the
  pressure is released the gasket returns to its original
  position.  
  When the same test is done without bonding, I get the same
  result.  
  
  My next test will be with the bearing surface machined to
  create tiny ridges for traction.  
  Hank
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