Diaphagm repair?

[DANDM]

ScubaGaskets seem to have a few aqualung compatible diaphragms. No idea if for your specific model.

 

[34109411]

I'd love to, but can't seem to find a source online. I'd be happy for tips in that direction as well.

check with DGX or scuba.com email them.

 

[rsingler]

Just saw this.
You can seal a puncture with a dab of clear silicone cement on either side. It works just fine. I've got a Scubapro reg I dive with a clear silicone diaphragm with a tiny patch like that - no problem.

A tear longer than a puncture? I wouldn't even try it.

I have an Airsource 3 diaphragm I'll sell you.

 

[iain/hsm]

This will give you an idea of the cost of a $16 diaphragm.

Silent Explorers Maple Grove Minnesot United States Online SCUBA

Silent Explorers, Brooklyn Park, Minnesota, United States, online sales vintage Aqua Lung Double Hose Regualtor parts, Poseidon Rebreathers Regulators, Professional CCR Regulator Service, Shearwater Dive Computers

www.silentexplorers.com

Silent Explorers may be helpful. Send them an email who knows

It used to be called the Sea Quest Air Source
I have enclosed below if the service manual if its possible to post in PDF (yep its below)
Its Part 45 they call it a Diaphragm Assembly. While its not an assembly its just the diaphragm
the Part number is 42803 and is the Sea Quest number not the later Aqualungs.

Just a couple of other points
The material is silicone (not latex)

Also be aware that there is a possibility for a pin hole on a flexible moving and dynamic diaphragm to develop rapidly from a pin hole leak into a tear or split for example when jumping into the water from a height (define height I guess) But shaking the thing underwater has a similar if not greater effect on dynamic load. While removing the bugs I guess so if you can be gentle with them (define gentle LOL)

 

[iain/hsm]

Just saw this.
You can seal a puncture with a dab of clear silicone cement on either side. It works just fine. I've got a Scubapro reg I dive with a clear silicone diaphragm with a tiny patch like that - no problem.

A tear longer than a puncture? I wouldn't even try it.

I have an Airsource 3 diaphragm I'll sell you.

Again not wanting to be the prophet of doom here but some caution on the process.

Depending on the hardness and flexibility of the glue against that of the diaphragm
The contact area of dissimilar material (Size of the dollop of glue used )
You can create another split in the diaphragm at a new the point of contact between the
two dissimilar materials at the contact edge where they meet.
This is what a load out spares kit is for however the reason why sports companies don't provide
these simple but essential parts defies all logic. Just Saying.

 

[Nemrod]

There are adhesives that will bond to silicone (and silicone to silicone). I would not use a silicone adhesive or glue to spot repair a diaphragm. However, if one insists upon doing a repair, this stuff, 3M AC79 primer and PR100 adhesive, might do the trick. There are other similar industrial products, most are kind of expensive and not on the counter at Ace or Home Depot.

 

[happy-diver]

Nah mate that stuff is just another fancy way of marketing superglue