Paper Tapered Caps for masking are environmentally friendly and economical. They are ideal for low-to-high temperature applications as they withstand up to 400 ºF (204 ºC). The recyclable paper does not promote condensation; however there may be minor dimensional variation due to changes in relative humidity. Manufactured in tan paper, Tapered Paper Caps are sized to fit 1/8" thru 3" male NPT pipes.