The Bucket Company Brand. 1/2” Male Pipe Thread (MPT) Bulkhead to 3/4” Straight Adapter Fitting. PTFE thread tape (Teflon Tape) is recommended for threaded joints. Rated and works with 1/2” threaded piping or 3/4” Vinyl Tubing/Rubber Hose and adapts pressure pipe from standard 1/2” Male Pipe Threads (MPT). Made of premium polypropylene plastic, used for connecting to various threaded piping, vinyl tubing, and rubber hoses and can be applied to water, gas, oil and fuel applications.