DIN O-Rings

[juanNC]

got me an answer direct from the source. very impressed with their customer service.

Hello Luke,

Your ZX 50-D uses a 90 durometer 111 O-ring on the inlet of the DIN bolt. Your Zeagle Dealer will have them in stock if he services Zeagle regulators there, because every 345-1000 1st stage service kit contains a 111 O-ring that is only used if the regulator is a DIN model. Since most regs are Yoke models, your Zeagle Service Center will have a surplus of 111s available. If not, anyplace that sells O-rings will know what you are after if you ask for a 90 Durometer Buna or Urethane 111 O-ring. (Urethane is a little tougher but more expensive).



Best Regards,



Jim Fox / Zeagle Systems, Inc.

Awesome. Thank you so much for this post. I have the same regulator as you and am looking for a spare O-ring after my DIN O-ring got lost in between dives making me miss out on my 2nd dive since nobody had a spare O-ring of this size. Where did you end up buying the 111 size?

Thanks!

 

[keyshunter]

juan,
Nadco in Greensboro is a Zeagle dealer, and will have all of the 111's that you want.

 

[Colliam7]

Where did you end up buying the 111 size?

Reef Scuba in Chesapeake (Technical Hardware) also has them, and is a great on-line operation to deal with.

 

[scubapeter]

I find that McMaster Carr is an excellent source for viton o-rings....They have anything you might want and the shipping rates are fair

 

[JB]

Just a comment, o-rings at the yoke or din connection are static and high pressure, therefore should not be greased, and should be of 90 duro. A good source of all 0-rings is AOP Tech O-rings Online Frameset.

 

[race890]

From oringusa:
ARP 5316 Elastomer Shelf Life Recommendation

The Society of Aerospace Engineers (SAE) issued Aerospace Recommended Practice (ARP) 5316 was issued in 1998 to supersede MIL-HDBK-695C (canceled) as the aerospace industry standard. ARP 5316 is often used as a guideline in determining useful shelf life of elastomers used in other industries.
* 5 years: Polyurethane (millable)
* 15 years: Nitrile, Neoprene, SBR, HNBR, Polyacrylate
* Unlimited: Ethylene Propylene [EPDM], Fluorocarbon [Viton], Perfluorinated Elastomer, Butyl, Silicone, Tetrafluoroethylene Propylene (Aflas®), Fluorosilicone.

I also called my o-ring supplier (for my DIY projects), AOPTec and they said just keeping them in a baggie or a slide drawer organizer for parts and the such would be adequate for general storage. In this way the parts are exposed to various temperatures, humidity, some UV and they last for the above, so putting them in a baggie or box for take along will not harm them either.

Next, my Apeks DIN uses the 111 o-ring. I have 110 and 112 for other people that have a DIN fitting that may not be my flavor of 111. You never know when you might be able to help.

And finally, as others have expressed- no lube on these o-rings.

It's a -112 O-ring, buy a bunch in viton for Nitrox, or 70 durometer buna rubber for regular compressed air. You can go on the web and get a pack of 50 for like 6 bucks or pay 5 bucks for like two of them at most dive shops. It is important to note that this is not "Din specific" as a -112 o-ring also fits most plastic dustcaps, several types of tank valves, and numerous other things.

Cheers and beers.

I would tend to think that all of the DIN O-rings need to be 90 Duro, rather than 70 (usually for LP), Apeks may use 80 or 85 duro at the factory though. Can you confirm 90 duro, rather than 70 duro for all DIN is much better ?

 

[Scubagermany]

Even though the thread is 15 years old, I just ordered this set from Amazon for 15 bucks:

Complete O Ring Set

I think that should be able to fix any blown O Ring