Inflator oring size.

[Diverspoint]

I have been replacing some inflator hose connector orings the past months, as a number were getting bad all at once.

I had problems with the "normal"size AS 010 and 011. Too thick, too big, too small etcetera.

Then I ordered another size, namely metric 7.5 x 1.5 mm. I had read somewhere that would fit as well.

They went in much easier, and no problem at all with the inflator. Not sure they will last langer or shorter, but I am happy with the result.

Anyone else had the same results?

 

[Couv]

-011 is the size I usually use and have done so without issue. The metric seals you ordered should work well and I look forward to your findings.

Another standard (non metric) size to consider would be a -903 as it has the same i.d. as the -011 @ 0.301 (7.65 mm) but just a bit thinner cross section @ 0.064 vs 0.070 (1.63 mm vs. 1.78)

 

[Diverspoint]

I have tried both 010 and 011, and the 011 kinda works, but it is the thickness that it is a problem.

When I tried to connect the inflator it would not go on easy, and sometimes it broke again right away.

I knew I had seen a different size somewhere here on the board, but I could not find it again.
So I just tried to measure an old Oring, and the 7.5 x 1.5 came closest. I did not know the 903 size though. Then again, maybe different manufacturers use different sizes oring.

 

[Scubagaskets]

I have tried both 010 and 011, and the 011 kinda works, but it is the thickness that it is a problem.

When I tried to connect the inflator it would not go on easy, and sometimes it broke again right away.

I knew I had seen a different size somewhere here on the board, but I could not find it again.
So I just tried to measure an old Oring, and the 7.5 x 1.5 came closest. I did not know the 903 size though. Then again, maybe different manufacturers use different sizes oring.

 

[halocline]

How nice to see an o-ring seller, presumably who knows something (or should) about common scuba o-ring sizes, use this thread as an advertisement while offering zero advice or help to the OP.

 

[halocline]

I have tried both 010 and 011, and the 011 kinda works, but it is the thickness that it is a problem.

Try the 903 as couv suggested, it will probably work. I think I use that size for the oddball SP regulator hose swivels, when most hoses are a standard 011. I think....it's been a while.

 

[Edward3c]

I have tried both 010 and 011, and the 011 kinda works, but it is the thickness that it is a problem.

When I tried to connect the inflator it would not go on easy, and sometimes it broke again right away.

I knew I had seen a different size somewhere here on the board, but I could not find it again.
So I just tried to measure an old Oring, and the 7.5 x 1.5 came closest. I did not know the 903 size though. Then again, maybe different manufacturers use different sizes oring.

I had the same problem. The jacket manufacturer is no longer in business. I found an O-ring online, but the minimum order was 1,000. My local dive shop provided some none standard O-rings for me to try; one fitted.

 

[Couv]

I had the same problem. The jacket manufacturer is no longer in business. I found an O-ring online, but the minimum order was 1,000. My local dive shop provided some none standard O-rings for me to try; one fitted.

McMaster-Carr

McMaster-Carr

 

[axxel57]

Had the same problem quite often. Since most of the hoses were otherwise okay, I used the LP hose 011 o-rings from my vintage regs which had been become thinner over the time.
Not perfect, but for a while I could use them if they hadn't become too stiff..........
Here in Europe I had that problem not so often, but I will check the 7,5 x 1,5mm o-ring.
Thanks for the hint and of course also Couv for the 903 idea!