Wm Harvey 029035 Pipe Joint Compound Wm Harvey 029035 Pipe Joint Compound Features:;Thixotropic, non drip paste for pipe joint threads on lines carrying water, steam, air or natural gas;Prevents corrosion to threads;Never hardens, joints separate easily;Contains no lead;Do not apply to plastic threads;Use Harvey"s TFE Paste or PTFE Tape made of Teflon on plastic threaded joints;Gray;8 oz brush top jar