Sizes range from 3/4" to 2" inches. Construction: Synthetic rubber tube; multiple spirals of high tensile steel wire reinforcement; MSHA accepted red synthetic rubber cover. Application and Temperature Range: Petroleum based hydraulic fluids and lubricating oils within a temperature range of -40F to +257F (-40C to +125C). Water, water/oil emulsion, and water/glycol hydraulic fluids up to +185F (+85C); Air within a temperature range of -40F to +158F (-40C to +70C). For air above 250psi (1,7 MPa), the cover should be pricked. Fittings: 78 Series