Size: The important sizes for a hose are inside diameter (I.D.), outside diameter (O.D.) and length
Temperature: working temperature range of the material being conveyed and the external/environmental temperature requirements
Application: the conditions of use (i.e. bend requirements)
Material: compatibility of material being conveyed, type and concentration
Pressure: to which the assembly will be exposed, including pressure spikes
Ends: also known as “couplings” – style, type, orientation, attachment methods, etc.
Delivery: testing, quality, packaging, and delivery requirements