Mastic Sealing Tape

Product description

Mastic sealing tape is a gray mastic tape. It is non-conductive, has good compression qualities and excellent electrical properties.

Applications

It can be wrapped, stretched or molded around irregular shapes for quick, smooth insulation build-up. Use it to insulate connections up to 600 volts and make a moisture seal at ground wire exits in high-voltage spliecs.

Performance characteristics

Property                      Typical Value                   Test Method

Specific Gravity(g/cm3)              1.25                     GB/T 533-1991

Cone Penetration(16℃,1/10mm)      62                      GB/T 4509-1998

Water Absorption(%)                0.06                     GB/T 8810-2005

Flow at Elevated Temperatures   No flow, sag or bleed at 49℃   GB/T 17875-1999

Low Temperature Flexibility      No cracks or loss of adhesion   GB/T 1682-1994 

Adhesion to Steel(N/mm)            3.2                       GB/T 2790-1995

Volume Resistivity(Ω·cm)            10¹⁴                      GB/T 1692-1992

Application Temperature(℃)          4～38

Service Temperature(℃)             -40～60

Ordering information

Mastic sealing tape is available in the following roll sizes:

3mm×38mm×1.5m

3mm×38mm×2m

3mm×20mm×300mm
*Alternative products for 3M 2900R tape