Has anyone got any idea on how this stuff compares in hardness to o-rings of say... 70 durometer?
I don't know anything about durometers so don't know how to compare them to the data in the tech data sheets on the Permatex website.
Thanks,
Weyland
Permatex "Right Stuff" spray on gasket maker?
Apr 20, 2006
8 Replies
First reply
Right stuff is pretty soft - likely closer to 30 than 70. For 70 you will want urethane more likely than silicone * Posted via a free Usenet account from *
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Right stuff is pretty soft - likely closer to 30 than 70. For 70 you will want urethane more likely than silicone
*** Posted via a free Usenet account from
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I checked the data sheets and it looks like all the urethanes that they (Permatex) have a temperature limit of 180 degrees. I need something that will handle something closer to 275. Realistically, it shouldn't ever get over 230, but you never know...
Best,
Weyland
I just went through the durometer thing. Not having a clue what the numbers ment.
Go to
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for foam. select Mil-spec.
There is a chart that shows all of the durometer scales & firmness rating.
Hope this helps.
Excellent~! Yes, it does indeed help. Thank you.
Now... just have to figure out *which* durometer scale they're using for Buna-N O-rings...
Best,
Weyland
Shore-A it looks like.
shore -d
?!?!?!?
No offense, but I find it kind of hard to believe a Buna-N O-ring that I can pinch pretty well between my nails is rated almost as hard as a construction hard-hat.
... or am I missing/not understanding something...?
Best,
Weyland
my mistake , it is shore a .. see >
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did not see the other post till today or i would have double checked
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