Looking for supplier that can offer these O-rings.

[Mech5656]

Dear Engineers,

I am reaching out to ask for help in finding some O-rings. If you know a supplier or work for one, please provide their website so I ask them for price and delivery. Below is what I need.

Material is EPDM T150. O-ring ID and thicknesses are in mm below. Durometer should be 80 or 85 (depending on what is available).


O-RING;456.060 MM;6.990 MM;ISO3601-1 A;4


O-RING;278.770 MM;5.330 MM;ISO3601-1 A;3


O-RING;240.670 MM;5.330 MM;ISO3601-1 A;3


O-RING;266.070 MM;5.330 MM;ISO3601-1 A;3


Thank you.

 

[3DDave]

Parker-Hannefin would be my suggestion.

 

[TugboatEng]

Shoot an email to McMaster-Carr. They usually respond within a few hours, are great at sourcing items even if not in the catalog, and they do small orders.

Do consider rounding your ID to the full mm and cross section diameter to the nearest 10th.

 

[3DDave]

I would also note that the ISO3601 has dash numbers for particular sizes; the one you specify has an id of 0.74mm

I would toss Apple Rubber into the ring as well.

 

[BrianPetersen]

Any local industrial supply shop that sells seals and gaskets can either make custom-sized O-rings or direct you to a supplier who can do it, and there are online suppliers as well. Have you tried pursuing that route, and if so, what was the issue or hold-up?

 

[GinBread]

80 duro EDPM, from what I've seen, is pretty standard. You shouldn't have many issues tracking this down.

McMaster-Carr is a great starting point, but sometimes not the best ending point. They are a middle man, and you might find better deals buying elsewhere once you have a better idea of exactly what verbiage you need to use to find what you want.

Parker has an entire handbook devoted to O-Rings.

Some vendors I know off the top of my head are Draco Mechanical in St Louis, Mo and Motion Industries.

[URL unfurl="true"]https://www.parker.com/Literature/O-Ring%20Division%20Literature/ORD%205700.pdf[/url]

 

[Mech5656]

Hello All,

Thank you for your responses. Here is the response from Mcmaster Carr. I am waiting from response from other sources you have mentioned and will update you.

We looked into it, but we do not have a source for these O-rings, and we respectfully decline to quote.

I'm sorry we couldn't be more helpful on this one.

 

[geesaman.d]

The critical question is which piece of your O-ring spec is generating the 'no-quote'.

I suspect you can get a custom o-ring vendor to make just about anything, but lead time and cost will be wildly variable. Challenge yourself (or your engineering team) to consider if the nearest off-the-shelf option is acceptable.

 

[btrueblood]

Um. Your first o-ring is essentially a -465, but you have converted the inch measurements to mm and given it way too many decimal places, indicating a precision that no supplier of molded rubber products will accept. McMaster has -465 orings in many elastometers, including a 75 durometer EPDM.
So your question really becomes:
Do you REALLY need 80 to 85 durometer?
Do you REALLY need T150 EPDM (and do you know what that is?)? From what I can see, T150 is a type of high-heat, high-abrasion epdm used in conveyor belts...not orings.

 

[Mech5656]

Hello Btrueblood,

I was able to find dash numbers for these O-rings. 465,379,378,375
Needed in EPDM 80 durometer. This is all. Nothing else is special. Thanks!

 

[Mech5656]

Draco mech also said no quote.

 

[BrianPetersen]

Did they say why they won't quote it?

Possibilities:
- Non-standard / non-"off-the-shelf" material. Can you work with the closest off-the-shelf available material? If not, why not?
- Order quantity too small to make it worthwhile for the supplier to bother with it. Not worth their time and effort.

 

[btrueblood]

theoringstore.com has them, look under epdm special compounds, and pick the EPDM E454 compound.

here:

https://www.theoringstore.com/store/index.php?main_page=index&cPath=367_2964_2965

marco rubber also has an 80 duro. compound -

https://www.marcorubber.com/epdm-o-rings.htm

- scroll down the list to their compound no. E1087

edit: as others have mentioned, you should also get quotes from local Parker dealer, parker compound E540-80 is a standard for them.

 

[hydtools]

Try Apple Rubber:

https://www.applerubber.com/?gclid=...5DVwPQmr4UCH6H2LlVzWOwsH6IO5OYiUaAvFYEALw_wcB

Ted

 

[Karl Tao]

China
You will find it in China,