manifold o-rings

maylar · Jul 17, 2020

Anybody know the size of the manifold & front fork o-rings 033281 ?
I want to get a couple locally.
Thanks

Peavey Jeltz · Jul 17, 2020

1-3/8 x 1-12 x 1/6 also known as a "-028"

maylar · Jul 17, 2020

Thanks.

marshg246 · Jul 17, 2020

Peavey Jeltz said:
1-3/8 x 1-12 x 1/6 also known as a "-028"

I think you meant 1-3/8" ID x 1-1/2" OD x 1/16" Cross Section also known as "-028"

Do you know the material. As I understand it (not an O-ring expert) BUNA-N is not good for fuel, FKM (Vitron) is; either should be OK for fork ears. but FKM for manifolds.

maylar · Jul 17, 2020

marshg246 said:
I think you meant 1-3/8" ID x 1-1/2" OD x 1/16" Cross Section also known as "-028"

Do you know the material. As I understand it (not an O-ring expert) BUNA-N is not good for fuel, FKM (Vitron) is; either should be OK for fork ears. but FKM for manifolds.

McMaster lists Buna-N as being oil and "mild chemical" resistant, and they say "Viton® fluoroelastomer O-rings resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol." Neither lists gasoline. I suspect Buna will be the only thing I'll find at a hardware store.

marshg246 · Jul 17, 2020

maylar said:
McMaster lists Buna-N as being oil and "mild chemical" resistant, and they say "Viton® fluoroelastomer O-rings resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol." Neither lists gasoline. I suspect Buna will be the only thing I'll find at a hardware store.

You're probably right on hardware stores. Look here for the differences in materials and applicaitons: https://www.allorings.com/o-ring-materials-comparison

jbruney · Jul 17, 2020

If it tolerates benzene then should be GTG for gasoline.

manifold o-rings

maylar

Peavey Jeltz

maylar

marshg246

maylar

marshg246

jbruney

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