SAE 100R1 hose should be used with petroleum- and water-based hydraulic fluids, within a temperature range from140° to 100° C. Type A consists of an inner tube of oil-resistant synthetic rubber, a single wire braid reinforcement, and an oil- and weather-resistant synthetic rubber cover. A ply, or braid, of suitable material may be used over the inner tube or over the wire reinforcement (or both) to anchor the synthetic rubber to the wire. Type AT has the same construction as Type A, except AT has a cover designed to assemble with fittings that do not require removal of the cover or any portion of it.