Meets ABYC Standard for non-abrasive and vaportight (non pressurized) seal of continuous length of LPG supply line passing “Straight-Thru” watertight bulkheads and decks from inside cylinder locker to each appliance. #1438-8439 slides over and seals around our LPG hose assemblies (except #40407 & 42421) through bulkhead or decks up to 1/2″ thick. #1438-8876 fits over andseals around 1/4″ to 3/8″ LPG copper tubing (before flare nuts attached) through bulkheads and decks up to 3/8″ thick. 3 piece nylon construction with lock nut & BUNA-N sealing gland resists salt water, fuels, weak acids and common solvents. Properly installed it will withstand up to 70 PSI water pressure and working temperatures -22 to 212 degrees F Other sizes on special order. Cut 1.35″ hole to install (1438-8439)