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View Full Version : ***** Industry Wide O-Ring Shortage ******



TomKaye
03-29-2011, 05:09 PM
All Shoebox Owners,

***** Rebuild Kit Offer at Time of Purchase Suspended******

There is currently an industry wide oring shortage for the type of orings we use in the compressor. We were told it would be a 9 week wait for the next shipment from several suppliers. We have managed to source just enough to keep production going but have eliminated the rebuild kit offer.

Word to the wise, be conservative with your orings and save the old ones. This applies to the white cast urethane orings only, the black Viton's are still available. We will let you know when the supply eases up.

Thanks,

Tom Kaye

rsterne
03-29-2011, 11:03 PM
Is there any possibility you could supply a list of the sizes, material, and quantity of each that are required?.... Since you can't supply spares, that would give us (your customers) the ability to chase down enough to meet our needs from local suppliers....

Bob

TomKaye
03-30-2011, 03:43 AM
The particular oring on backorder is cast urethane 90 durometer size 006

Tk

nd1979
03-30-2011, 06:24 PM
Hi Tom,
Do you have the size of the other urethane oring on the lower cylinder?
Thanks
John

TomKaye
03-30-2011, 06:39 PM
Lower cylinder takes 006 for all three.

tk

DaveP
03-31-2011, 01:05 AM
Tom,
Are there subsitutes that could be used in the interim until the cast urethanes are available? I don't need any at the moment, but with warmer weather just around the bend, I sure don't want to miss any shooting opportunites.
Thanks,
Dave

TomKaye
03-31-2011, 03:23 AM
No substitutes that's the problem. They are available at Apple Rubber in NY for $2.40 each. These are really out at the end of the durability scale by themselves.

Tom

SiliconOrb
03-31-2011, 09:02 AM
Have you tried PTFE for the two main shaft sealing rings? They are a little harder (Shore D:55) but they have better lubricity, excellent abrasion resistance, less need for lubrication, high temperature and pressure ratings, and so on. They are also cheaper. They may be a little too hard for the back check valve, but if they work for the other two it could save you parts and might even be better. If you have already tried these for those two parts then nevermind :cool:

TomKaye
03-31-2011, 04:28 PM
Tried them before and they didn't last but we are experimenting again with different parts.

tk

davee1
03-31-2011, 07:10 PM
Tom,
Do you know Tim McMurray? He runs an airgun business and carries high quality Urethane orings.
Maybe he can help?
http://www.mac1airgun.com/index.htm

TomKaye
03-31-2011, 08:49 PM
Yes I know Tim from WAY back. Thanks but we have scavenged enough to keep production going for the short term. We are still don't have enough to offer the parts kit discount.

Tom

Stan
04-05-2011, 01:20 AM
Not sure if this will help, but McMaster-Carr sells 25 packs of AS568A-006 polyurethane 90 durometer o-rings:

http://www.mcmaster.com/#catalog/117/3463/=bqii24

JSB
04-05-2011, 03:04 AM
The particular oring on backorder is cast urethane 90 durometer size 006

Tk
[shameless plug]

http://www.mcmaster.com/ search for 9558K611

JSB

TomKaye
04-05-2011, 03:19 AM
Maybe, maybe not. There are two types of urethane orings, millable gum and cast. One is worthless, the other gold. Most places sell the gum ones because they are a lot cheaper. I will get some in and see.

thanks

Tom

Stan
04-05-2011, 12:21 PM
The McMaster Carr specifications do not call out the material details. AS568 is an aerospace specification (the latest version is AS568C) for o-ring size. There are several o-ring manufacturers in the USA, but all have a lead time, minimum quantities, and a few other issues when working with them. All the best!

Gabby
04-07-2011, 02:30 PM
[shameless plug]

http://www.mcmaster.com/ search for 9558K611

JSB Is this the correct o ring? have they been tried?

TomKaye
04-07-2011, 03:36 PM
They are very likely NOT the right oring. Cast urethane never comes in amber.

Tom

Gabby
04-07-2011, 04:47 PM
Thanks Tom. Lookin forward to B'S in with You in Arkansas.