Topic: Harbor Freight O rings???

[Elniniomuchachos]

Any body ever use the Harbor Freight O Ring kits on their bikes?
If so how was the quality?

[captaincrash80]

I haven't used any of them on my bike yet but I have used them on my truck without any issue. It wasn't on the motor but on the connections for my transmission cooler which gets fairly warm.

[kerryb]

I took two matching o-rings from a harbor freight assortment box , put one in gasoline, the other on the table.  At the end of the day, the one in the fuel had swelled noticeably.  You might get away with it, but I don't think o-rings in the carb are supposed to do that.

[jamesb]

my friend uses them all the time in his auto repair shop so far he hasn't had any issues with them.

[Inigo Montoya]

There are o-rings and then fuel resistant o-rings. o-rings used in refrigeration are usually sufficient for fuel applications.

[mystic_1]

Harbor Freight sells both viton and nitrile o-rings.  Make sure you know what you're buying.

mystic_1

[co425]

Harbor Freight sells both viton and nitrile o-rings.  Make sure you know what you're buying.

mystic_1

+1.

I would just get your o rings in the size you need from mcmaster carr. Quality parts decent price and material selection. I have noticed that HF o rings have casting marks on them that others dont. I would not use them for high heat, fuel or internal engine. That prety much rules out the cb750 right there.

[Raef]

I have a set of both the metric and standard HF o-rings, I have used them for many things from vibration damping to the seals on my main jets. on an occasion that one would swell hampering reassembly I would just replace it.

they are cheap and yes they do have a mold ring around the outside. I usually use 1 size smaller putting a slight stretch on them

Mark

[mrrch]

Watch out, the metric kit i got online was the same as the standard set but it was labeled with the metric equivalent (that made it metric/ go figure)
Useful once in awhile, the Japanese generally use thinner orings on most things.

[magconpres]

I put one of these around the oil orifice that fits in the top of the cyl block (CB400F).
It is the Nitrile variety. 
Should I be concerned about it's ability to take the heat?