[PSUBS-MAILIST] O-rings

[subvet596 at optonline.net]

Thanks Dan.
 
John K.
(203) 414-1000

----- Original Message -----
From: "Dan H." 
Date: Thursday, September 19, 2013 9:46 am
Subject: Re: [PSUBS-MAILIST] O-rings
To: Personal Submersibles General Discussion 

> John,
> That makes a lot more sense. ;-)
> 
> The cross section that's called for should work well. As I said 
> in the earlier E-mail, it's pretty important to have the mating 
> surfaces true to each other. Weld first then machine. That 
> will keep all surfaces true and give you the proper compression 
> of the O-ring all the way around the hatch.
> 
> Dan H.
> 
> ----- Original Message ----- 
> From: subvet596 at optonline.net 
> To: Personal Submersibles General Discussion 
> Sent: Thursday, September 19, 2013 7:48 AM
> Subject: Re: [PSUBS-MAILIST] O-rings
> 
> 
> Hi Dan:
> 
> Sorry for the confusion, a run on sentence will do that. I was 
> asking about the size/cross-section of the O-ring. The 316 
> stainless steel ring would be welded to the dish lid in which 
> the O-ring would be mounted using a machined dove-tail grove, 
> 
> Thanks for the input.
> 
> John K.
> 
> 
> ----- Original Message -----
> From: "Dan H." 
> Date: Wednesday, September 18, 2013 7:07 pm
> Subject: Re: [PSUBS-MAILIST] O-rings
> To: Personal Submersibles General Discussion 
> 
> > John,
> > 
> > Are you sure you really want an O-ring with a one inch cross 
> > section??????????You'd need to machine a groove just under 
> an 
> > inch deep and an inch in across to accept it. If your hatch 
> > cover is what the print calls for, it's not think enough for 
> a 
> > groove of that size. 
> > 
> > The .275 cross section is plenty. The two mating surfaces 
> being 
> > flat and mating with no gap is much more important then the 
> O-
> > ring cross section. 
> > 
> > You should be fine with the O-ring called for. 
> > 
> > Dan H.
> > ----- Original Message ----- 
> > From: subvet596 at optonline.net 
> > To: PSUBS, Inc. 
> > Sent: Wednesday, September 18, 2013 3:35 PM
> > Subject: [PSUBS-MAILIST] O-rings
> > 
> > 
> > Hi All:
> > 
> > I need O-rings for the entry hatches which are 24" id. 26" 
> od. 
> > he question I have is, what is the best cross section size 
> to 
> > use The parker site has the E1157 @ .275 it seemed a little 
> > small to me. I have not yet machined the dove -tail grove 
> yet. 
> > Also are there any specs. available for setting up a 3 dog 
> > mechanism, able to open from inside or out? 
> > 
> > Looking forward to the convention.
> > 
> > 
> > John K.
> > (203) 414-1000
> > 
> > 
> > 
> > -------------------------------------------------------------
> ----
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> > 
> > 
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> > 
> 
> 
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