Others Thoughts on O-ring damage

[FL22]

I noticed rubber material extruding from the joint of my external hpa filter. I’ve never had a burst disc rupture. The filter says it’s rated for 300 bar the max I’ve had it filled to is 250.

Both sides had O-ring damage. It came with a replacement set, but I’m wondering if perhaps I need better quality/higher psi rings. Like the green ones?

Thoughts?

 

[BenjeneerJohn]

Kind of looks like assembly damage.

Use a good o-ring lube on a new o-ring and reassemble.

John

 

[Danman]

I noticed rubber material extruding from the joint of my external hpa filter. I’ve never had a burst disc rupture. The filter says it’s rated for 300 bar the max I’ve had it filled to is 250.

Both sides had O-ring damage. It came with a replacement set, but I’m wondering if perhaps I need better quality/higher psi rings. Like the green ones?

Thoughts?

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As a pm equipment mechanic i change out tons of o-rings that look just like that. Same pressures just hyd fluid instead of air.... Usually, the fitting gets loose and the o-ring is no longer seated properly and loses its backing strength. This can shred it, weaken it and usually a leak follows. When I look at valve blocks I'm always looking for o-rings that look like that with rubber shards sticking out, 99% of the time that valve/fitting will be loose.
I agree with John, a good silicone lube on reassembly.
Evidently I always thought the green o-rings were for AC systems(better resistance to chemicals), but my Air Venturi inline filter has a green o-ring. The rebuild kit also has green o-rings.
Was the cap loose by chance @FL22 ?

 

[FL22]

As a pm equipment mechanic i change out tons of o-rings that look just like that. Same pressures just hyd fluid instead of air.... Usually, the fitting gets loose and the o-ring is no longer seated properly and loses its backing strength. This can shred it, weaken it and usually a leak follows. When I look at valve blocks I'm always looking for o-rings that look like that with rubber shards sticking out, 99% of the time that valve/fitting will be loose.
I agree with John, a good silicone lube on reassembly.
Evidently I always thought the green o-rings were for AC systems(better resistance to chemicals), but my Air Venturi inline filter has a green o-ring. The rebuild kit also has green o-rings.
Was the cap loose by chance @FL22 ?

Thanks for that explanation . As far as it being loose one side was, the O-ring was beginning to show “signs”. The other, where you can see the rubber coming out of the cylinder, I had to put it in a vise and it took significant persuasion to get it apart .

As far as the green and black ring, I didn’t read extremely deep into it. There is plethora of information out there, but what I gather is that with the black, nitrile rings can be made with various compounds for different applications.

The green are high temperature, high chemical resistance, and are also extremely durable.

 

[SILENT SQUIRREL]

What material are the green O-rings made of?

Edward

 

[FL22]

What material are the green O-rings made of?

Edward

Perfluoroelastomer, yeah google ftw lol.

 

[Dogowski]

I noticed rubber material extruding from the joint of my external hpa filter. I’ve never had a burst disc rupture. The filter says it’s rated for 300 bar the max I’ve had it filled to is 250.

Both sides had O-ring damage. It came with a replacement set, but I’m wondering if perhaps I need better quality/higher psi rings. Like the green ones?

Thoughts?

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I've had this happen on one of my Amazon chinese blue filters as well. I think they sourced out the cheapest orings and they are not made very well causing them to blow out and protrude. I quickly changed mine with a spare and all is well. A good source on the green ones would be great!

 

[Centercut]

More than likely they supplied 70 duro orings when that application should be 90 duro.