Need help finding a hydraulic cylinder wiper

[JohnDB]

I'm overhauling the M4500DT's steering booster. I can get most seals from Kubota but not the rod wiper. There's no Kubota part number. The gland assembly containing it is unobtanium (and was USD$900). The existing wiper is munted. There are some tiny letters and numbers on the seal (photo below) but really hard to be sure what they are.

EDIT Sorrysorrysorry the correct OD is 33mm!

I'm hoping someone here can help identify a wiper that will do the job, because I've scoured the internet and so far found nothing.

The current damaged wiper is similar construction to an ordinary lip seal complete with spring loaded lip, but I don't know if this is the correct seal for the job.

Thanks for your help!

 

[Kennyd4110]

Try these guys:

Hercules Sealing Products

Hercules Sealing Products

herculesus.com

 

[GreensvilleJay]

someting like this ?

EAI 22mm x 34mm x 7mm FPM/FKM TC Double Lip w/Stainless Steel Spring Oil Seal. Comp. /w Viton Shaft Seal : Amazon.ca: Industrial & Scientific

EAI 22mm x 34mm x 7mm FPM/FKM TC Double Lip w/Stainless Steel Spring Oil Seal. Comp. /w Viton Shaft Seal : Amazon.ca: Industrial & Scientific

www.amazon.ca

I googled "34mm od 22m id 7mm wide seal" got LOTS of 'hits....

 

[PerrinWestlock]

Try these guys:

Hercules Sealing Products

Hercules Sealing Products

herculesus.com

Are they trustworthy?

 

[ruger1980]

Are they trustworthy?

Yes they are probably one the larger names in the hydraulic sealing component business. I use them and Allegheny York for the most part when sourcing aftermarket seals.

I am not sure who is the best to source from in Ontario but I can ask my colleague that lives in Ontario if he has a recommendation the next time I speak to him.

 

[Old Machinist]

The last wiper seals I bought for my New Holland backhoe I got from orings and more. Very fast, reliable shipping.

 

[Kennyd4110]

Are they trustworthy?

Very.

Didn't know you weren't in the USA.

 

[JohnDB]

Thanks guys. Sorry, I made a complete tit of myself... the wiper OD is actually 33mm not 34 (got confused with a different seal). I've corrected the drawing.
However based on your input:
@Kennyd4110 @ruger1980 I checked out Hercules, that's easily the best seal finder website Ive ever seen but it doesn't have 33 (or 34) OD wiper unfortunately.
@GreensvilleJay that looks like an ordinary lip seal, I think wipers are more specialised. However, if I can't find any wiper seals I'll look in that direction (s/s spring as per your example).
@Old Machinist Tried O-rings and more, drew a blank there but thanks for suggesting them.

 

[#40Fan]

Have you looked on Home - Oz Seals ? They are in Australia.

Edit: Are you sure it is metric?

 

[GreensvilleJay]

Pardon Our Interruption...

google finds lots of them !

 

[JohnDB]

@#40Fan thanks for the suggestion, I've now looked there, huge range but nothing my size (common refrain when I'm clothes shopping too...

Definitely metric. The booster seems is so like a Vickers booster design that I did wonder about the possibility.

 

[JohnDB]

Pardon Our Interruption...

google finds lots of them !

LoL thanks! Those seem to be rotary seals. I think the wiper seal is a specific design of seal, so I have been hunting in that direction. If I can't find something designed as a wiper, I'm attracted to your idea about a lip seal with s/s spring as a fall-back.

 

[PoTreeBoy]

@#40Fan thanks for the suggestion, I've now looked there, huge range but nothing my size (common refrain when I'm clothes shopping too...

Definitely metric. The booster seems is so like a Vickers booster design that I did wonder about the possibility.

That's awfully close to

 

[PoTreeBoy]

I'm overhauling the M4500DT's steering booster. I can get most seals from Kubota but not the rod wiper. There's no Kubota part number. The gland assembly containing it is unobtanium (and was USD$900). The existing wiper is munted. There are some tiny letters and numbers on the seal (photo below) but really hard to be sure what they are.

EDIT Sorrysorrysorry the correct OD is 33mm!
View attachment 168534



I'm hoping someone here can help identify a wiper that will do the job, because I've scoured the internet and so far found nothing.

The current damaged wiper is similar construction to an ordinary lip seal complete with spring loaded lip, but I don't know if this is the correct seal for the job.


View attachment 168519

Thanks for your help!

That diagram looks like the existing, a spring-loaded shaft seal. That's what I'd use; it's not super important. For some reason 22x33 wipers seem to be extra rare.

 

[JohnDB]

That diagram looks like the existing, a spring-loaded shaft seal. That's what I'd use; it's not super important. For some reason 22x33 wipers seem to be extra rare.

Thanks for those suggestions. Definitely not any imperial size. I may have to go with an ordinary lip type oil seal if none specifically designed as wipers are forthcoming.

 

[trevoroni]

I found this part number in my suppliers catalogue but it doesn't show up anywhere else S022033070

I'd go with the closest press in steel/polyurethane wiper I could find.
Here's their catalogue for hydraulic seals. Sealing Solutions

Are you measuring the seal or gland with the dimensions you provided?

 

[#40Fan]

^^ Good question. He sould be measuring the rod for the I.D. and the gland for the O.D.

 

[JohnDB]

@trevoroni @#40Fan yes, measured rod diameter 22mm, housing ID 33mm. I haven't given up (yet) on finding a proper wiper seal. Thanks to the input from everyone here, its opened up a much broader range of possibilities so if I can't find anything, it probably doesn't exist.

 

[#40Fan]

If I couldn't find the correct size, but could find the next millimeter smaller one easily, I'd have a ring/bushing made to take up the difference between the gland bore and smaller O.D. seal. That seal doesn't take much, if any abuse, and would easily stay in the ring/bushing.

 

[GeoHorn]

This story resembles what occurred to me. My M4700DT developed a leak….and the steering cylinder had been superseded. I ended up having to pay $2K+ for the updated cyl and labor.

Bite the bullet. At least you’ll have a cyl for which parts are available for the future….