High Temperature 'O' Rings

Come on! If you expect us to do your work for you, you could at least provide some meaningful application information!

Here is what a simple search can provide. Nortesco Seals & Packing—'O' Rings

YOU SHOULD TRY IT YOURSELF SOMETIME.

not building a booster stage for a rocket system are you ?

thats a clue

Do you have acces to Google where you live ?

if so just type " high temprature o rings " and this is what you get.

Showing results for high temperature o rings.

Search Results

1. O-Ring Materials There are certain applications which prohibit the use of conventional rubber O-ring Seals. The use of hostile chemicals or extreme temperature (both high ...
   supaseal.co.uk/o-ringmaterials.htm - Cached - Similar
2. Perlast Perfluoroelastomers FFKM Perlast Perfluoroelastomers are reliable high temperature sealing materials for the most demanding sealing applications.
   www.perlast.com/ - Cached - Similar
3. 'O' ring materials - James Walker Group We supply our 'O' rings in over 100 general and high-specification grades of elastomer (and other materials) including ranges of low-temperature and rapid ...
   www.jameswalker.biz/group/.../_o_ring_materials.html - Cached - Similar
4. Simriz® High Temperature O-Rings, Seals Kalrez O-rings Seals Kalrez® o-rings, seal · Kalrez® news · Kalrez® news archive. Simriz O-rings Seals Simriz® o-ring, seal spacer High temperature ...
   www.pspglobal.com › Simriz® - Cached - Similar
5. Kalrez O-Rings and High Temperature O-rings Supplier Dichtomatik are an o ring supplier operating throughout both the UK and Europe. Our wide product range includes standard and non standard o rings and seals, ...
   orings-seals.co.uk/o-rings-and-seals/ - Cached - Similar
6. O-ring - Wikipedia, the free encyclopedia In some high-temperature applications, O-rings may need to be mounted in a ... This was blamed on a failed O-ring seal. The escaping high temperature gas ...
   en.wikipedia.org/wiki/O-ring - Cached - Similar
7. High-temperature O-rings for automotive sealing: News from ... 17 Jun 2004 ... In both structure and manufacturing, O-rings offer simple and comparatively inexpensive sealing solutions.
   www.engineeringtalk.com/news/sri/sri127.html - Cached - Similar
8. Choosing High Temperature O-Rings - Associated Content ... 10 Mar 2009 ... "An ounce of prevention is worth a pound of cure." If you install the wrong o-rings into a high temperature situation, you will be faced ...
   www.associatedcontent.com/.../choosing_high_temperature_orings.html - Cached - Similar
9. O-Ring Material Guide O-Ring Material / Compound Selection Chart. ... Temperature Range: -10ºF to 615ºF, High Temperature Resistance Excellent Chemical Resistance Low Out Gassing ...
   www.marcorubber.com/materialguide.htm - Cached - Similar
10. High temperature, steam resistant, lead-free, FKM Seals and O-rings Using the latest advances in elastomer technology, V75J has been developed to provide exceptional long-term sealing performance, high temperature stability ...
    www.prepol.com/V75J.html - Cached

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Unobtanium with a sealing coating of thiotimoline will give you both a tight fit and withstand your direct tempertures. The unobtanium will channel all of the heat into a more conducive dimension while the thiotimoline will anticipate any void in your surfce motion before you reach it.

Like it

In the words of a famous robot..... "Need more input!"

Chemcial compatibility? length of exposure? pressures involved?

If FFKM won't work (which it probably won't), you may have to settle for a metallic C-ring.

Google - Viton

It is widely used in the aerospace industry.

Oh what the hell....

Here it is...

http://www.dupontelastomers.com/products/viton/viton.asp?redirect=vitondotcom

Viton is not much use to the OP - this is the first sentence in the link you provided - "Viton® fluoroelastomer is the most specified fluoroelastomer, well known for its excellent (400°F/200°C) heat resistance."

He wants something for "300-350 degree celcious" (sic)

Shot in the dark!

You already know that standard O-Ring material will not withstand the Temperature you are proposing.

Saying that a standard "google it" answer is not sufficient.

I think the best bet you have is something with PTFE or the metallic seal.

Now it all depends on the application and better think outside the box and say goodbye to the O-ring design.

Get us more application details and we might help with some ideas.

Werner

"I think the best bet you have is something with PTFE or the metallic seal"

Metallic I get, but PTFE at 350 deg C - you got to be kidding.

Think I was! Thats what happens when one mixes imperial units with the "standard".

470 degree for PTFE is not 470 degree C. So clear PTFE - it is only metallic!

But heh, up to 300 degree C PTFE does not melt!

W.

Thanks to all,

I want those o rings for Glue applicator machine like Nordson make.

It is for static application.

I can search in google.

But I will not get expert solution.

There I will get a lot option but not the exact one.

I think I will get only one material name from all of you.

I am a very less experienced person among you.

Thank you.

regards.

For static application give some thought to Graphite

300ºC to 350ºC is not to much. Contac your supplier.

Please tell the forum:

1. Which suppliers have been contacted?
2. Which materials have been considered?
3. Why these materials have been rejected?

A Perfluoroelastomer (FFKM - as suggested by rosarch) such as Kalraz will withstand >350 ^oC as an intermittent temperature, but it depends entirely on what product you are sealing and whether it is a static or dynamic application.

There are metallic o'rings for that temp.and with that shape if application is static you could use an metallic seal from JET SEAL company otherwise look for metallic o'rings, i dont remember suppliers for this.Don't expect plastic ones:viton material is the most and dont use it for mor than 150C approx.-

Sorry all,

Two of them are reciprocating 5mm stroke only.

Those two are frequently damaging.

Thank you.

What about metallic bellows?.-

I know that you said that this is for a glue applicator, but what glue operates at 300°C? Any other minor details you wish to tell us. Like maybe that this is under 50 Giga-Pascals of pressure. Did you forget to mention that the fluid is some mild irritant like 20 molal sulphuric acid. (The pressure is so high so that the water in this acid at these temperatures doesn't boil.) Could you possibly enlighten us on the anticipated reciprocation frequency, like 4000 rpm maybe.

It just dawned on me, you want us to play 20 questions. I wonder why nobody is asking any questions?

Thank you,

I will send you details of glue.

I think excess pressure in gum pot making to 'o' ring distroy.

Sometime water in air pressure creating problem.

lets solve this problem.

If you have water in your air, then the first thing you need to do is get yourself an adequate desiccant dryer and dry the air properly and stop generating steam.

But water boils at 212F (100C) at atmospheric pressure so it probably isn't the steam doing it. If your gum pot is being overpressurized you need to put a FUNCTIONING pressure relief valve in the system immediately before you blow it sky high and kill someone.

Perfluoroelastomer (FFKM) would be the best material for high temperature O-Rings. We use TRPlast FFKM high temperature O-Rings which can withstand up to 330c so definitely within your temperature range.

That's a good recommendation! We've been using TRPlast at our chemical processing plant and it's been a massive improvement compared to the rubber seals we were using previously.

I can't vouch for how well they perform for high temperature applications, but as far as the universal chemical range goes, I've no complaints.

I think you might want to take a look at this one.https://theffkm.com/

What glue are you using that needs 300-350°C to melt ??

How much glue are you dispensing in a shot ?A hi-tech high temperature glue like

TECHNOMELT® SUPRA 350 HT

only needs about 150°C to melt.

A Nordsen pressurised Hot Melt station is rated to about 230°C.
What materials are you actually gluing that requires such a high temperature ?

Are you running the machine within the normal parameters or have you altered the temperature range so the glue melts / runs faster for example?

Have you contacted your Glue Machine supplier to find out what material their O-Rings are made from?

How often are the O-Rings failing ? How many cycles, how long to exchange and the costs involved ?