Question Swapping out an SPG, any pitfalls I should be aware of?

[Eric Sedletzky]

Make sure the O-rings are duro 90 at least.
They’re exposed to full tank pressure and unless they are rated for that pressure they could extrude and blow out. A lot of people forget that.
If you ever talk to someone who says they’ve seen SPG’s blow out an O-ring, that’s probably why.

 

[johndiver999]

Make sure the O-rings are duro 90 at least.
They’re exposed to full tank pressure and unless they are rated for that pressure they could extrude and blow out. A lot of people forget that.
If you ever talk to someone who says they’ve seen SPG’s blow out an O-ring, that’s probably why.

so you are saying that the link the Chairman provided will not work?

 

[Eric Sedletzky]

so you are saying that the link the Chairman provided will not work?

I don’t know.
Are they hard enough not to blow out?

 

[johndiver999]

well you said 90 was needed, the ones listed were 70 or 75, I forget.

 

[Eric Sedletzky]

well you said 90 was needed, the ones listed were 70 or 75, I forget.

I don’t think those are hard enough.
But that’s just me, people can do what they want.

 

[Pearlman]

I happen to have a mini bottle of slilicone oil that came for lubing my treadmill. Can I use the same oil on the o-rings or do I need the thicker silicone grease only?

 

[The Chairman]

The tiny O-rings blow out because they get neglected. Change them out once a year, lube generously, and you won't have that problem. MANY, if not most shops don't change them out during your yearly or bi-yearly service.

 

[The Chairman]

I happen to have a mini bottle of slilicone oil that came for lubing my treadmill. Can I use the same oil on the o-rings or do I need the ticker silicone grease only?

Use a grease. That will help keep the water off the o-ring. Christolube and Tribolube are my faves. You don't need an O₂ grease, but your regulator will appreciate it.

 

[happy-diver]

When you mix rags and grease there is high likelyhood of crap transference, use ultrasonic and brush, no rags

If you have a build up of heat hardened rubber and grease crud inside spg-hose fitting sealing will be affected

use heat hardened rubber and grease remover