The Model RM4 is a premium quality heavy duty multipurpose wire reinforced hose recommended for service where a tough and rugged hose is required.
This "bull hose" has a bright yellow Neoprene/SBR cover and black Nitrile tube, and is available up to 4" diameters. High pressure ratings of 400-600psi apply. It is excellent under the most abusive conditions.
A similar hose in smaller diameters is avaialble with the RM3 hose.
Temperature range is -40F to 220F.