3M 398 FR non-flame-propagating fiberglass adhesive tape

      Characteristics of the 3M 398FR

The 3M 398FR is a glass cloth tape, classified as a "technical" tape from 3M’s Scotch range.

Its main feature is that it is flame retardant and non-flammable, according to various standards:

• FAR 25853(a) and FAR 25855(d) (Federal Aviation Regulations)

• Approved by Boeing: BMS 5-146 Type 1, Class 1, Grade A

• Compliant with the latest EU specifications on toxic smoke emissions 2003/11/EC

These certifications make it widely used in the aerospace industry.

It contains no antimony, which, although known for its flame-retardant properties, is toxic to humans.

The glass cloth backing offers high tensile strength, abrasion resistance, and tear resistance. It is among the most durable backings.

The acrylic adhesive has a high tack and excellent aging properties, providing long-lasting performance. It can withstand temperatures ranging from -29°C to 121°C.

Conformable, it is suitable for textured, curved, or irregular surfaces.

      Applications

This product is widely used in the aerospace industry:

• Sealing and joining of thermal and acoustic insulation panels where strong adhesion and flame retardancy are required. Often used in aircraft cargo holds.

• Sealing of windows, ducts, and seat repairs in aircraft.

• Reinforcement and protection of pipe joints and air ducts (both hot and cold).

• Protection of electrical cables exposed to extreme temperatures and wear.

      Technical data