Exhaust hose vs radiator hose?

[Leeward Rail]

Easy ordering, availability and integration with existing business processes is my guess

Agreed. I worked for a company that purchased from them for those reasons.

 

[Leeward Rail]

Grainger, Fastenall, McMaster-Carr all specialize in quick delivery and extensive inventory and one-stop shopping.

Yup.
I would definitely buy from Fastenal and McMaster Carr commercially.

Grainger not so much. Very overpriced and unlike the others, carried nothing that I couldnt have easily sourced elsewhere, at a savings to the company I worked for up in the Arctic where delivery times were everything.

 

[mermike]

Grainger will sometimes price match if you ask. The West Marine model.

 

[NYSail]

Exhaust hose has minimal pressure requirements where as radiator hose has high pressure requirements.