LA535 loader coupler o-rings

[Old Machinist]

Anybody know the correct size or part numbers for the o-rings in the LA535 couplers?

I have 6 different types of o-ring assortments and they don't match any I have.

 

[North Idaho Wolfman]

Parts diagrams for this does not list the O-ring separately.

 

[NCL4701]

Doubt you’ll find a part number. First one I replaced in a quick attach, I had to first identify the size of the quick attach. (See chart below or find online reference if the below doesn’t match up with what you have.)

I was dealing with a 1/2” Pioneer at the time and somewhere found it took a 117 Buna-N 70A durometer (hardness). It’s been working for the past couple hundred hours so apparently it was right for a 1/2” Pioneer. For whatever reason I don’t recall, I also noted a 1/4” Pioneer is a 113.

So, to my knowledge, which is not great, you have to research it to figure it out yourself if the above didn’t help you and no one else chimes in.

I got a bag of about 50 117’s for maybe $5 or less. Took about 5 minutes of fiddling to change it out.

If you’re not looking for the o-ring for a female quick connect, my apologies for the lengthy answer.