Sierra (116-368-0565 ) 5/16" Low Permeation Fuel Feed Hose I.D.: 5/16" or 7.9mm, o.D.: 5/8" or 15.49mm, wt. "C": 13, max WP: 100 Has a plastic barrier Veneer with an NBR outer layer tube to prevent permeation. The temperature ranges from -20 DegreeF to 212 DegreeF Reinforced hose complies w/epa & carb very low permeation Requirements & is weather/UV resistant Primarily used for fuel Feed (gasoline up to 85% ethanol blended fuels/diesel/all bio-diesel blends) Meets USCG type a1-15 Requirements for pleasure boats. Meets Saej1527 type a1-15 ISO 7840 type A1 and NMMA/CE type accepted standards