OATEY 31199 1/2 in. x 260 in. PTFE White Thread Seal Tape

White PTFE tape like the Oatey 31199 is the general-purpose grade at 3 mils thick, used for water and general threaded pipe work. Gas piping normally calls for the heavier yellow gas-rated PTFE tape, so for fuel gas connections use a yellow gas-rated tape instead of this white one.

Yes. The 31199 tape complies with Military Spec No. A-A-58092 and UL 31 RO, which is what facility and institutional buyers usually need cited on a submittal for thread sealant tape.

Order Oatey model 31199. That is the manufacturer part number for the 1/2 inch by 260 inch white PTFE thread seal tape, and it is a single-configuration item, so there is no finish, size, or color choice to specify.

PTFE tape and paste thread sealant both seal tapered NPT threads; the 31199 tape is the dry option, wrapped in the direction of the thread so tightening does not unwind it. Tape keeps the joint clean and does not drip, while a paste sealant is often preferred on larger diameters or where a fitting may need repeated adjustment. Many plumbers use both together on critical joints.

It is a high-density PTFE at 3 mils thick with a density of 0.7 g/cubic centimeter, which is specified to resist tearing and stretching during wrapping. That matters on production work where you are wrapping dozens of joints and a thin, stretchy tape shreds on the thread crests.

Oatey offers this PTFE thread seal tape both carded and packaged bulk on spools. If you are stocking a truck or an MRO crib, the bulk spool packaging is the one to ask for; the carded version is the counter-sale format.