Injectable Plastic Packing Tiger Pak Blue The original Tiger Pak, a general purpose water oil and gas packing. Tiger Pak Wellhead Tiger Pak with smaller anti-extrusion fillers for easier injection into wellheads. Tiger Pak F Developed for use against more aggressive solvents in reformulated gasoline. Tiger Pak FF Tiger Pak F with smaller anti-extrusion fillers for easier injection. Tiger Pak A Tiger Pak for Ammonia service, also good against Ethyl Alcohol and Methanol.