Where to purchase heat-proof air suspension o-rings made of Viton (FKM, FPM)
#1
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The reason why front struts are more sensitive to damage than the rear may be higher temperature under the engine bonnet.
That demands heat-proof o-rings.
Has anyone purchased o-rings for the air suspension system of a durable material like Viton® (FKM, FPM) or knows where to buy some ?
Thanks
That demands heat-proof o-rings.
Has anyone purchased o-rings for the air suspension system of a durable material like Viton® (FKM, FPM) or knows where to buy some ?
Thanks
Last edited by LeoJagger; 04-05-2014 at 07:40 AM. Reason: Question left open
#2
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The reason why front struts are more sensitive to damage than the rear may be higher temperature under the engine bonnet.
That demands heat-proof o-rings.
Has anyone purchased o-rings for the air suspension system of a durable material like Viton (FKM, FPM) or knows where to buy some ?
Thanks
That demands heat-proof o-rings.
Has anyone purchased o-rings for the air suspension system of a durable material like Viton (FKM, FPM) or knows where to buy some ?
Thanks
Hi LeoJagger,
In the U.S., McMaster-Carr (McMaster.com) carries a wide selection of Metric, SAE and Military-spec Viton O-rings. They all seem to be rated to 400F. I would assume there are similar industrial supply companies in Germany and throughout Europe.
Just google "Viton O-rings."
If you disassemble your front shocks and replace the O-rings, the rest of us would be grateful for photos! :-)
Cheers,
Don
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Partick the Cat (04-04-2014)
#4
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Thank you Don, I found some, but before I let someone disassemble my XJR in his garage I need to purchase the fitting o-rings.
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
#5
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Thank you Don, I found some, but before I let someone disassemble my XJR in his garage I need to purchase the fitting o-rings.
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
Hope this helps...
#6
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These are o-rings :
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79031-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-220px-o-rings_assorted.jpg?dateline=1396703223)
Does anyone know the inner diameter I.D. and the thickness W of the air suspension o-rings ?
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79032-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-250px-o_ring.png?dateline=1396703223)
There are different sizes :
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79033-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-220px-o-ring_collection.jpg?dateline=1396703223)
Pics pinched from O-Ring and O-ring - Wikipedia, the free encyclopedia
Thanks
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79031-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-220px-o-rings_assorted.jpg?dateline=1396703223)
Does anyone know the inner diameter I.D. and the thickness W of the air suspension o-rings ?
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79032-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-250px-o_ring.png?dateline=1396703223)
There are different sizes :
![](https://www.jaguarforums.com/forum/attachments/xj-xj6-xj8-xjr-x350-x358-28/79033-where-purchase-heat-proof-air-suspension-o-rings-made-viton-fkm-fpm-220px-o-ring_collection.jpg?dateline=1396703223)
Pics pinched from O-Ring and O-ring - Wikipedia, the free encyclopedia
Thanks
#7
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LeoJaguar, clearly I think we all know what O-Rings are.. but thanks for the lesson...
My premise for supplying the end connector sizes was to assist in narrowing down the approximate size of the O-Ring that would be needed.
Might be a best bet to start off with a "assorted metric O-Ring set" as other members have done in an effort to replace worn or ruptured O-Rings on the end connectors.
When you pull off an O-Ring - take measurements via your previous post and get back to us with your findings...
My premise for supplying the end connector sizes was to assist in narrowing down the approximate size of the O-Ring that would be needed.
Might be a best bet to start off with a "assorted metric O-Ring set" as other members have done in an effort to replace worn or ruptured O-Rings on the end connectors.
When you pull off an O-Ring - take measurements via your previous post and get back to us with your findings...
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#8
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Welcome to Jag-lovers - Members Photo Viewing Page
What LeoJagger needs to know is either the I.D. and O.D., or one of those plus the cross-sectional diameter or thickness of the O-ring body. A simple matter of removing the O-ring and measuring with a caliper.
Leo also needs to know the sizes of any O-rings inside the air shocks, which is what I am most curious to learn.
It appears that LeoJagger (or anyone else contemplating this work) is a pioneer going ahead of the rest of us without the benefit of prior knowledge.
You can do it, Leo! And please share your results with the rest of us who are not as brave and daring! :-)
Cheers,
Don
#9
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I tried to find something useful at ReBay, but the Item I found fits to an Audi Allroad (331054125205). For the X350 there are air spring repair kits offered without shocks (181004674786), but they are rear ones, not front, and I'm not sure that I need them. There is a fine instruction at
Audi allroad Front Air Spring Replacement | Audiction.com
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Thanks
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Don B (04-08-2014)
#10
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![Icon Boat](https://www.jaguarforums.com/forum/images/smilies/icon_boat.gif)
I tried to find something useful at ReBay, but the Item I found fits to an Audi Allroad (331054125205). For the X350 there are air spring repair kits offered without shocks (181004674786), but they are rear ones, not front, and I'm not sure that I need them. There is a fine instruction at
Audi allroad Front Air Spring Replacement | Audiction.com
![Icon Rolleyes](https://www.jaguarforums.com/forum/images/smilies/icon_rolleyes.gif)
Thanks
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
#11
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Thanks for finding that link, Leo. I'm wondering if any type of kit exists for the X350 fronts and/or rears along the lines of this kit for Mercedes:
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
#12
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Thanks for finding that link, Leo. I'm wondering if any type of kit exists for the X350 fronts and/or rears along the lines of this kit for Mercedes:
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
#13
![Default](/forum/images/icons/icon1.gif)
Thanks for finding that link, Leo. I'm wondering if any type of kit exists for the X350 fronts and/or rears along the lines of this kit for Mercedes:
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
Mercedes Front Air Suspension Strut Shock Repair Kit Genuine w O ABC 220320 2538 | eBay
It appears to come with a large rubber seal, a metal circlip, and a replacement air pressure retaining valve (to maintain a minimum air pressure in the air spring so it doesn't collapse).
Is anyone aware of such a kit to fit our X350s?
Cheers,
Don
#14
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Thank you Don, I found some, but before I let someone disassemble my XJR in his garage I need to purchase the fitting o-rings.
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
If anyone already knows the measures, especially the inner diameter and the thickness of the o-rings or the outer diameter of the o-rings of the spring struts, the compressor, the pressure reservoir (air accumulator tank) or their air lines, please answer.
I am about to exchange them all.
Thanks
The manufacturer of the O-Ring kit I have is Danco.
I slipped the O-Ring onto an old 6mm end connector I had laying around (no O-Ring - destroyed and frayed) and it fit in the groove nice and snug!
This would be a good start I believe...
I wonder if the #4 O-Ring kit from Danco (measurements) would be identical for the 4mm end connector O Ring?
Once we get the 4mm O-Ring measurements sorted - we all should be good to go as these are the 2 sizes of all lines at compressor, accumulator tank, control head and lines...
Last edited by abonano; 04-08-2014 at 04:53 PM.
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LeoJagger (04-10-2014)
#15
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If I recall from the Jaguar manual, the front air hoses are 4 mm O.D. and the rear air hoses are 6 mm O.D., but the O-rings on the brass fittings must presumably be significantly larger.
Leo also needs to know the sizes of any O-rings inside the air shocks, which is what I am most curious to learn. Don
Leo also needs to know the sizes of any O-rings inside the air shocks, which is what I am most curious to learn. Don
Last edited by reyesl; 04-11-2014 at 04:36 AM.
#16
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I'd never thought about a #6 O-ring being a 6 mm size, but that makes sense! But I'm trying to figure out which dimension of those O-rings is 6mm. If my math is correct:
5/16 in. = 0.3125 in.
7/16 in. = 0.4375 in.
1/16 in. = 0.0625 in.
6mm = 0.2362 in.
6mm is a little less than 1/4 in., 5/16 in. is greater than 1/4 in., so I'm not sure how the dimensions match up....
Help me, abononano! My brain is in a twist! :-)
Cheers,
Don
#17
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I guess this is a discussion on the orings where the lines are connected to the special fittings??
I seldom have leakage there just a fyi, most leakage is from the center top mount plate(sometimes slowed or stopped by tightening the 17mm nut on the shock stem)
and also from blown bags, forget it and replace![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
and lastly from the lower bag mount,
none of which i have seen a fix for but all ears(and eyes)
I seldom have leakage there just a fyi, most leakage is from the center top mount plate(sometimes slowed or stopped by tightening the 17mm nut on the shock stem)
and also from blown bags, forget it and replace
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
and lastly from the lower bag mount,
none of which i have seen a fix for but all ears(and eyes)
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
Last edited by Brutal; 04-11-2014 at 12:25 PM.
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meirion1 (05-17-2015)
#18
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Removed my air-line fittings to get the correct sizes:
Air-line fitting O-ring: 8mm ID x 12mm OD
Air-Valve fitting O-Ring: 6mm ID x 8mm OD
Photos to follow.
Note: If heat damage is a concern, you may use Fuel Injector O-Rings of the same size. Brutal is correct in that if the leak is from a worn Air-Bag, replace the complete unit as you would need a properly equipped shop to repair the assembly.
Air-line fitting O-ring: 8mm ID x 12mm OD
Air-Valve fitting O-Ring: 6mm ID x 8mm OD
Photos to follow.
Note: If heat damage is a concern, you may use Fuel Injector O-Rings of the same size. Brutal is correct in that if the leak is from a worn Air-Bag, replace the complete unit as you would need a properly equipped shop to repair the assembly.
Last edited by reyesl; 04-11-2014 at 11:41 AM.
#19
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Does the 8mm ID X 12mm OD size apply to both the front and rear air line fittings?
Thanks,
Don
#20
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We might need to do a little more research on the Danco O-rings. Danco is a manufacturer of water plumbing components, and their O-rings are made of Buna-N (Nitrile), which is rated for potable water supplies up to only about 248 deg. F, compared to 400F for Viton. Whether this would have any real-world consequences in our air suspensions, I can't say, but in his OP LeoJagger expressed his concern that under-hood temperatures may lead to premature failure of the front shock O-rings, which is why he was specifically looking for Viton.
I'd never thought about a #6 O-ring being a 6 mm size, but that makes sense! But I'm trying to figure out which dimension of those O-rings is 6mm. If my math is correct:
5/16 in. = 0.3125 in.
7/16 in. = 0.4375 in.
1/16 in. = 0.0625 in.
6mm = 0.2362 in.
6mm is a little less than 1/4 in., 5/16 in. is greater than 1/4 in., so I'm not sure how the dimensions match up....
Help me, abonano! My brain is in a twist! :-)
Cheers,
Don
I'd never thought about a #6 O-ring being a 6 mm size, but that makes sense! But I'm trying to figure out which dimension of those O-rings is 6mm. If my math is correct:
5/16 in. = 0.3125 in.
7/16 in. = 0.4375 in.
1/16 in. = 0.0625 in.
6mm = 0.2362 in.
6mm is a little less than 1/4 in., 5/16 in. is greater than 1/4 in., so I'm not sure how the dimensions match up....
Help me, abonano! My brain is in a twist! :-)
Cheers,
Don
I was thinking maybe a Viton 6mm O-Ring would do the trick. Brutal is correct in these fittings at the struts usually don't leak (unless of course someone over tightens them ruining the integrity of the O-Ring) - I believe they are only supposed to be tightened to 5Nm (which to me is hand tight + 1/4 turn)
I'm getting 0.2362 for mm conversion to inches...so yes
For the 4mm size - 0.1574
I don't believe there is a 8mm O-ring anywhere in the air suspension system. (According to my sources reyesl) Only 6mm and 4mm
Last edited by abonano; 04-11-2014 at 03:42 PM.