Author Topic: O Ring Replacements (Read 390 times)

Jim · « **on:** October 29, 2020, 06:08:56 pm »

Are these suitable O rings for Jin's engines (do all his H&M models take the same size 20mm x 1mm?)

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catman · « **Reply #1 on:** October 29, 2020, 06:59:58 pm »

The correct size is, OD-22mm, ID-20mm, diameter is 1mm. In looking at your screen shot it looks like it shows a OD of 20mm. I have bought some replacements and the 22-20-1 are a perfect fit.

While I am not sure, I believe that all of Jins hit and miss engines have a 20mm piston. One of his newer engines uses a 11mm diameter piston, but that is not hit & miss.

Jim · « **Reply #2 on:** October 29, 2020, 09:40:32 pm »

So get these ones 21mm x 1mm ?

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Adirondack Jack · « **Reply #3 on:** October 29, 2020, 10:00:37 pm »

Nope. You want 22 mm OD, 1mm ring diameter, which has to be subtracted twice to get the ID, which is 20
The website you show lists OD and rubber thickness, so you want 22x1

Jim · « **Reply #4 on:** October 29, 2020, 10:21:16 pm »

Thanks guys....just to make 100% sure as these will take awhile to arrive from China....these are what I need?

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Adirondack Jack · « **Reply #5 on:** October 29, 2020, 10:34:14 pm »

Yup. That’ll do er

Jim · « **Reply #6 on:** October 29, 2020, 10:40:19 pm »

Thank you!

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Author Topic: O Ring Replacements (Read 390 times)

Jim

O Ring Replacements

catman

Re: O Ring Replacements

Jim

Re: O Ring Replacements

Adirondack Jack

Re: O Ring Replacements

Jim

Re: O Ring Replacements

Adirondack Jack

Re: O Ring Replacements

Jim

Re: O Ring Replacements