Industrial PTFE Thread Seal Tape

Blue MonsterSKU: 70885

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1/2 in. x 1,429 in. PTFE Tape
Sale price$6.32

Note: Priced . Sold in quantities of 1.

1/2 in. x 1,429 in. PTFE Tape
3/4 in. x 1,429 in. PTFE Tape

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Blue Monster PTFE Thread Seal Tape is a thicker, denser, general-purpose thread seal tape that comes in a monstrous 1,429 inch roll. That is 5 times more tape than conventional rolls of low-density thin tapes. Fewer wraps are necessary to affect a leak-proof seal and it applies easily. No waste and no re-taping make sealing joints a breeze.

Blue Monster thread sealing tape is manufactured from PTFE resin, a polymer consisting of recurring tetrafluoroethylene monomers whose formula is (CF2-CF2)n. It is inert and compatible with a very wide range of materials. Use Blue Monster on threads made from galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, polypropylene, PVC, CPVC, ABS, fiberglass and more. It can be used on pipes carrying the following:


  • Acids, concentrated
    (see precautions) and Acids, dilute
  • Alcohols, Gasohol
  • Aliphatic solvents, Aromatic solvents, Chlorinated solvents
  • Ammonia, liquid
  • Caustics, concentrated
    (see precautions)
  • Compressed air, Steam, Water
  • Cutting oils
  • Diesel fuel oil
  • Ethylene glycol, Glycerine
  • Fatty acids
  • Heating oils, Kerosene
  • Hydraulic fluids, Hydraulic oils
  • Hydrogen, gaseous and liquid, Inert gases, gaseous and liquid
  • Jet fuel
  • Ketones, Petroleum solvents
  • Liquid Petroleum Gas, Natural gas
  • Mineral oils, Vegetable oils
  • Nitrogen, gaseous and liquid
  • Soap, liquid


  • Composition: 99.6 percent PTFE <0.4 percent
  • Pigment Color: Blue
  • Length: 1,429 inches
  • Thickness: 0.0035 in. +/- 10 percent
  • Density: 0.8g/cm3
  • Elongation: 100 percent
  • Tensile Strength: 15N / mm2


  • A new, thicker, professional-grade density
  • Monstrous roll (1,429 in.)
  • Seals threads effectively in more applications
  • No need for pipe dope.
  • Easier to use - no waste!
  • All purpose - use on iron, brass, copper, aluminum, stainless steel, galvanized steel, polyethylene, polypropylene, PVC, CPVC, ABS, fiberglass and more.


  • Compatible with a broad range of gases and liquids
  • Compatible with a broad range of piping materials
    Will not harden or crack on the joints
  • Effective across a broad range of temperatures and pressures
  • Acts as a thread lubricant and anti-seize
  • Prevents electrolytic corrosion of threads
  • No curing time
  • Unlimited shelf life
  • Non-flammable
  • Non-toxic
  • Clean

Pressure rating: Mill-Rose Blue Monster Thread Sealing Tape has been used to seal fittings carrying water and oil at pressures up to 10,000 PSI or 69,000kPa

Note: Pressure ratings are relative to the quality and torque of the fittings and the amount of tape used.

Temperature Range: -450 degrees F to +500 degrees F (-268 degrees C to +260 degrees C) PTFE is completely stable up to +500 degrees F or +260 degrees C. Decomposition is slow up to 750 degrees F or 400 degrees C. Although decomposition will occur on contact with naked flames.

Fittings above 1 in. (38mm) diameter. Use 3/4 in. (19mm) wide tape for fittings up to 2 in. (51mm) in diameter. Use 1 in. (25mm) wide tape for fittings larger than 2 in. (51mm) in diameter.


  • Note: Keep Mill-Rose Blue Monster Thread Sealing Tape clean. Replace the clip on the spool after use. Store in a clean place. PTFE is virtually chemically resistant to all media, however there are a few exceptions. Alkali metals such as elemental sodium, potassium and lithium are to be avoided. These alkali metals remove fluorine from the polymer molecule. Extremely potent oxidizers such as fluorine (F2) and related compounds (e.g., chlorine trifluoride(CIF3) can be handled by PTFE, but only with great care. Since fluorine is absorbed into the resin, the mixture becomes sensitive to a source of ignition such as impact. Other media to avoid are 80 percent NaOH or KOH, metal hydrides such as boranes (e.g., B2H6), aluminum chloride, ammonia (NH3), certain amines (R-NH2), imines (R-NH) and 70 percent nitric acid at temperatures near the suggested service level.
  • Do not use Mill-Rose Blue Monster Thread Sealing Tape on oxygen lines!


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