Original Equipment Manufacturer G. W. LISK COMPANY INC. - L - 5144 - Flame Arrestor / Breather / Vent Plug - Brand NEW Flame arrestor/ Breather/ Vent Plug. Used in a variety of applications, flame arrestors are designed to extinguish any flame which would try to pass through it. Also known as Breathers or Vent Plugs. The GW Lisk Flame Arrestor incorporates a corrugated metal element which provides a matrix of small triangular openings. The materials used, the opening size, and the element length is determined by the application. Metal tapes used in the element are very thin and therefore create a minimum amount of pressure drop. Dimensions: 2" D x 1-1/8" high. More Information SKU 139393 Condition FN - FACTORY NEW Part Number L-5144 Alternative Part Number HAYS 1062-213