Sierra Shields Series 368 Low Permeation Marine Fuel Hose 38 Sierra Shields Series 368 Low Permeation Marine Fuel Hose 38 has a plastic barrier veneer with an NBR outer layer tube to prevent permeation. The shields series is a reinforced hose that complies with EPA CARB very low permeation requirements is weatherUV resistant. Specifications I.D. 38 or 9.5mm Wt. C 16 O.D. 1116 or 17.27mm Max WP 100 The temperature ranges from -20F to 212F Application Primarily used for fuel feed gasoline up to