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Old Jul 17, 2010 | 07:13 PM
  #31  
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Waynenap
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From: Phoenix Az
You're probably right. O rings by there very nature are not real easy to measure. ID is probaly the hardest to get right, especially that small.
Maybe Guzzle will chime in and give us his thoughts.
 
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Old Jul 17, 2010 | 07:25 PM
  #32  
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This is one of the best places I found for O-Rings
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Old Jul 17, 2010 | 07:34 PM
  #33  
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Waynenap
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From: Phoenix Az
I don't know enough about them to know how close you have to get make them work. Maybe someone will come up with a standard for these replacements and offer them off the shelf. If anyone wants my old hoses and or o rings when I take them off, I'll be glad to send them to them.
 
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Old Jul 17, 2010 | 07:46 PM
  #34  
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Waynenap
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From: Phoenix Az
Originally Posted by rbaker6336
I D = .295 maybe .301
OD = .438
Thickness = .069

Closest I see is .301 ID X .070 cross section or 5/16 ID 1/16 cross 7/16 OD -011

5/16" male oring
OD = .379
I D = .229----------------.239
Thickness = .069---------.070

or 1/4 X 1/16 X 3/8 -010

O-Ring size Chart O-ring Sizing Chart
I just noticed on the chart you linked to that the inside diam. was quoted + or _ .005. That would put us pretty close in the ball park.
 
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Old Jul 20, 2010 | 12:27 PM
  #35  
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DieselOrings
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After being gone all last week, I missed most of this. From the measurements taken it does appear that the o-rings are a standard dash size rather than an ORB o-ring but I am wondering what the durometer of these o-rings are. Standard hardness would be either a durometer 75 (soft) or durometer 90 (fairly hard) and would be an important factor depending on the pressures that the hoses see during operation.

A hard durometer o-ring of this small size would be rather stiff when you tried to squeeze them between your fingers where a durometer 75 would collapse easily.
 
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Old Jul 20, 2010 | 05:54 PM
  #36  
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Waynenap
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From: Phoenix Az
Originally Posted by DieselOrings
After being gone all last week, I missed most of this. From the measurements taken it does appear that the o-rings are a standard dash size rather than an ORB o-ring but I am wondering what the durometer of these o-rings are. Standard hardness would be either a durometer 75 (soft) or durometer 90 (fairly hard) and would be an important factor depending on the pressures that the hoses see during operation.

A hard durometer o-ring of this small size would be rather stiff when you tried to squeeze them between your fingers where a durometer 75 would collapse easily.
I'd have to say they're probably the soft. They didn't seem too stiff to me.
They're black.
 
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