Which system details must accompany a rubber hose cartoon request
The shortest request a supplier can still quote from names form (bulk length, crimped ends, reinforced construction, sleeve or cut-to-length assembly), inner diameter, working pressure in psi, service temperature with the medium, length, end fittings, quantity and US destination. The search string without those axes is not a line item. Rubber Hose Sourcing copies that list to more than one factory.
Which working pressure in psi decides whether an offer is usable
Working pressure in psi the supplier must confirm decides whether the construction can sit on the same comparison table. Leave it blank and two factories will silently pick different tube walls or braid counts. Burst pressure is a factory claim (often discussed as a multiple of working pressure on SAE-style pages); this desk does not reprint a number as its own. A supplier-proposed alternative is usable only when the changed ID, psi rating and reinforcement are written on the same line.
Separate quantity-driven items from one-off checks
Quantity, packing (coil, reel or crate) and Incoterms scale with the lot. Sample approval, a named SAE or ASTM method and automotive files are one-off until the configuration changes. Mixing the two groups makes unit prices look comparable when they are not.
How a supplier-proposed alternative should be evaluated
We lay specification, documents, packing and delivery window side by side. We do not recast a unit cell as a market-beating percentage. A plant certificate does not stand in for a lot test on the quoted rubber hose cartoon construction. If the factory swaps a vulcanized tube for a TPE / TPU jacket, treat that as a new request: compression set and heat window will not travel with the original line. See the quote-reading note.