Tapecoat HT-MB High Temperature Tape is designed to protect buried and submerged pipe, pipe type cable, pipe joints, fittings, tanks, insulated steam lines, and other metal surfaces from corrosion and electrolysis over a wide range of in-service temperatures up to 250°F (121°C) in constant or peak load operating conditions. Tapecoat HT-MB may be applied to new pipelines and to pipelines operating at elevated temperatures.

Tapecoat HT-MB is a pre-formed, cold applied, self-adhering coating that is impermeable to water and salt. The specially formulated "high temperature" adhesive is laminated to a woven polypropylene backing. The very aggressive adhesive is kept from permanently bonding to its backing by a tough, easily removed polymer release liner, which also prevents contamination of the adhesive prior to its use.

Color	Black
Service temperature	-30ºF to 250ºF (-35ºC to 121ºC)
Application temperature	-30ºF to 185ºF (-35ºC to 85ºC)
Total thickness	30-50 mils (0.76-1.26 mm)
Adhesion (primed steel)	250 oz/inch width (2.79 kg/cm width)
Mesh Net
Tensile strength	50 lb/inch width (8.95 kg/cm width)
Dielectric strength	Exceeds 12 kV
Sale crock test	Pass
Insulation resistance	106 megohoms
Water vapor transmission rate	0.01-0.20 g / 100 in2 / 24 hr (0.25-3.1 g / m2 / 24 hr

Surface must be dean and dry. Moisture, dust, dirt, rust or other foreign matter should be removed by scraping or wire brushing. SSPC-SP3 Power Tool cleaning is recommended. Remove oil and grease, etc. with suitable detergent. Remove salt and other contaminants by high pressure fresh water cleaning. Optional cleaning method is SSPC 6 Commercial Blast.

Application

Priming: If operating temperatures do not exceed 180°F (85°C) TC Omniprime® is the primer of choice. TC 7000 Epoxy has been developed specifically for use with HT-MB when service temperatures are between 180°F and 250°F (85°C and 121°C). Either primer can be applied by brush or roller. Allow either primer to dry to touch before applying HT-MB.

Tape Application: Tapecoat HT-MB is applied by hand, with the Tapecoat Hand Wrapster #3, or by plant or over-the-ditch tape wrapping methods. Tapecoat HT-MB is applied by removing the release liner and spirally wrapped with minimum 50% overlap. Wrapping tension is to be maintained to obtain conformability of the tape to the surface being coated.

Note: Tapecoat 2025 Rockshield (Terrashield) is recommended in areas where rough backfill is expected.