Cross Section Diameter (in): 0.37 Material: NBR (60) Coating: None Applications: Ambient temperature fuel handling; High and low pressure LPG service; Hydraulic fluids; Power steering seals; Radiator thermostat seals Inside Diameter (in): 3.48 Compatible With: Alpha-Olefin base synthetic lubricants; Ethylene Glycol; Petroleum base lubricants; Silicone oils and greases; Water, water base engine coolants Temperature (°F): -40 - 212 Shoe Type: Extreme Service, Single Grouser, Trapezoidal, Clipped Not Compatible With: Automotive and aircraft brake fluids; High levels of ozone; Ketones; Phosphate ester fluids; UV Light Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image.