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Sourcing an elusive Rubber-Ring!

Sourcing Leads required.....

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Andre ROUSSEAU02/11/2019 02:26:07
18 forum posts

Hi, I'm trying to track-down what has, so far, proven to be an elusive rectangular-section rubber ring of 36mm O.D. x 28-30mm I.D. x 5mm thick.

This is not available via regular inquiry in New Zealand yet I am confident that there is one here. It will likely be amongst the inventories of the automotive/truck/motorcycle spare-parts trade, probably to be found in obscure places in vehicles, e.g. washer bottles, light escutcheons, etc, etc. However, if you can't quote a part number no-one will even bother to look on the shelf so this line of inquiry is a waste of time.

Does anyone mess about with these vehicles for whom a ring of these dimensions rings a bell? A location-description, vehicle model type and year would be the minimum information I want. A specific part-code would be Christmas and New Year as well.

Any offerings? Cheers.

Paul Lousick02/11/2019 04:46:42
1408 forum posts
540 photos


Rings with a square or rectangular section are normally called "washers". A quick search found this site but not in the size that you require. **LINK**

Try searching under rectangular section rubber washers, or similar description.


Old School02/11/2019 07:24:39
335 forum posts
29 photos

You can make them by trepanning them out of rubber sheet.

Bruce Edney02/11/2019 08:04:44
161 forum posts
53 photos

You could try these guys - They say they custom make

Ali expres seller

Also have you tried Seal innovations?



Robert Atkinson 202/11/2019 08:59:36
643 forum posts
16 photos


Sounds like a brake caliper piston seal e.g.
Holden Astra down under.
Try talking to the ebay seller BigRed, I've found them very helpful.

Robert G8RPI

Howard Lewis02/11/2019 12:37:45
3264 forum posts
2 photos

Since you are looking for a seal, it would probably be described as an 'O' Ring.

If circular section it sounds like you are looking for a 26mm Ring x 5mm section. O rings are usually quoted on the ID.

You may be able to find a rectangular section one, again, seems that your search is for 26 mm x 5mm scetion, but square, rather than circular.

A company that supplies seals and O rings is the place to go.



Nick M0NPH02/11/2019 13:35:12
24 forum posts

Your local Caterpillar dealer may be able to help as a lot of cat machines use square section o rings

in hydraulic fittings


Oldiron02/11/2019 14:43:13
442 forum posts
22 photos

These may be able to sort you out. Polymax They sell by the metre. You can then make any size you want.


XD 35102/11/2019 21:02:35
1425 forum posts
1 photos

The rubber seal or gasket from a 1 inch camlock fitting would be close to those dimensions . Try rubber supplies or retailers , here in OZ we have places like Clarke rubber that sell all sorts of o rings and seals .

You could also buy some rubber sheet of the appropriate thickness and type and cut out the size you want ,Making some gasket punches to suit is pretty easy .

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