From - DaTong Tech

Distributor

3M Tape : 

3M 9731 - 3M Double Coated Polyester Tape - 5.5 mil

1 mil, polyester carrier with 2.5 mil, silicone adhesive and 2.0 mil 350 acrylic adhesive. Double liner of 4.0 mil polyester film and 4.2 mil, 61 lb polycoated kraft paper. High temperature and medium solvent resistance, high HSE and LSE.

Tape Thickness w/o liner Mils (mm)                5.5 (0.14)
Carrier Type                                                   Polyester
Liner Type                                             4.0/5.0 Polyester/PCK
Temperature Resistance Minutes Hours         350°F (177°C)
Temperature Resistance Days Weeks            250°F (121°C)
Solvent Resistance                                         Medium
Relative Adhesion HSE                                  High
Relatvie Adhesion LSE                                  High

3M 9119 - 50 ,3M 9119-85
One side silicone adhesive / another side acrylic adhesive
Made by 3M China