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Silver aluminium foil tape roll half inch wide five yards long

3M

3M 433L Aluminum Foil Tape Silver 1/2in x 5yd

SKU CH-4E5X-CVB0F

Aluminum foil tape rated from -65 to 600 degrees Fahrenheit for indoor or outdoor sealing and repair

  • Product colorSilver
  • Withstands extreme heat up to 600°F for demanding industrial use
  • Remains flexible in freezing conditions down to -65°F for outdoor reliability
  • Aluminium foil backing reflects heat and resists moisture in harsh environments
  • Trusted 3M 433L quality engineered for aviation and automotive applications
  • Continuous 5-yard roll with 1/2-inch width fits precise sealing tasks

Industrial Aluminum Foil Tape

3M 433L is a continuous-roll aluminum foil tape supplied in a silver finish. It is designed for assembly, manufacturing, automotive, aviation, construction, electronics and general maintenance tasks. The tape suits indoor and outdoor environments where a conductive, heat-reflective seal is required. Professional technicians and maintenance crews use it for shielding, splicing and thermal management.

Temperature Performance Limits

The tape operates continuously from -65 degrees F to 600 degrees F. Above 600 degrees F the adhesive and foil can degrade, losing bond strength and reflectivity. Below -65 degrees F the adhesive becomes brittle and may fail to adhere to cold substrates. The range covers most industrial ovens, exhaust systems and cryogenic pipe insulation without additional protection.

Roll Capacity and Coverage

Each roll provides 5 yards of 1/2-inch-wide tape for targeted repairs and shielding jobs. The narrow width suits cable wrapping, seam sealing and small-component masking where wider rolls waste material. Long continuous runs or large-area shielding will require multiple rolls to complete the work.

How it compares

Measured against everything we stock in Office, Masking & Packing Tape, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 62% of the 3,148 comparable items (median $29.99).

Specifications

Product
Brand name3M
Product colorSilver

Questions about this item

Is the 1/2 in width the right choice for sealing small duct joints?

The roll is 1/2 in wide and 5 yd long, so it covers narrow seams and patch repairs without excess overlap.

What does the 600 degree F maximum temperature mean for a heat shield wrap?

The tape maintains adhesion and foil integrity up to 600 °F, making it suitable for exhaust wraps, oven ducts and similar high-heat surfaces.

Does the acrylic adhesive on the 433L series bond to painted metal at -65 degree F?

Yes, the specified range of -65 °F to 600 °F means the adhesive stays tacky and the foil remains flexible in deep-freeze conditions.

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