Understanding Fuel Hose Markings: What Does "NOH-F" Mean?

[YoshiMoshi]

TL;DR Summary

What does "NOH-F" marking mean on fuel hose?

Ok the fuel hoses on my car, I see "NOH-F" written on them, along with some numbers. Just googling fuel hose, it seems "NOH-F" is on most fuel hoses. But what does it mean? I tried to search Google for an answer, but nothing.

I hope somebody ok here can tell me the meaning, if it's some sort of specification or something?

 

[Baluncore]

Fuel hoses are usually made from NBR (nitrile butadiene rubber), which is oil resistant.

-F; probably means the hose is rated for fuel, electrically conductive, to prevent fire started by static electricity discharge.

"NOH" is not a standard code or abreviation. You will probably need to find the "TAS", "IAS" or "IHS", manufacturer's website to identify the product line or meaning. Nitrile Oil Hose ?

 

[Lnewqban]

That hose should have a marking showing SAE 30 followed by some numbers as well.

 

[florida23]

Believe the numbers indicate when the hose will start to bend? Not sure on the unit of measurement though....

 

[YoshiMoshi]

Believe the numbers indicate when the hose will start to bend? Not sure on the unit of measurement though....

You mean like the bend radius?

 

[Tom.G]

After spending too much time, here is what turned up:

Used for plumbing an oil cooler or a transmission cooler (thus high temperature & pressure)

NOH-F probably an industry rating for hose material & chemical/temperature resistance

3402 eiher a manufacturerers style/class number OR a subset of the NOH-F

Gates Rubber site shows similiar for oil/transmission cooler plumbing
https://www.gates.com/us/en/fluid-p...ion-oil-cooler-hose.p.3289-000000-000001.html

(found with Google searches for:
noh-f 3402 hose
noh-f "3402" hose)

Hope it helps!

Cheers,
Tom

 

[Baluncore]

The internal diameter of hoses, and hose fittings, are specified in multiples of 1/16".
A 1" hose will be -16. A 1/2" hose will be -08. A 1/4" hose will be -02.
If that hose is a 1/4" hose, then the -02 probably specifies internal diameter.
The 34 then, is then probably the construction style of the hose, from that manufacturer.