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Tape Primer
The primer consists of a mixture of butyl rubber and synthetic compound and a Solvent-gasoline. The primer is applied to the appropriately prepared pipe surface before application of inner layer tape. The function of primer is to provide a bonding medium between the pipe surface and the inner layer tape.
Primer must be fully compatible with 3-ply tape below.

1.1 Hand-applied primer:
pipe surface application temperature:   - 10°C up to + 65°C
pipe operating temperature:   - 60°C up to + 75°C
flashpoint:   app. -14°C
consumption:   app. 0,2 litre/m2

1.2  Machine applied primer: (also for hand-application)
pipe surface application temperature:  - 40°C up to +75°C
flashpoint:    app. +21°C
consumption:
machine application   approx. 0,1 litre/m2
hand application   approx. 0,2 litre/m2

properties:
Flashpoint (EN 57)    + 21°C
content of aromatic compounds           0,01%
(including Toluene, by GC analysis) 
content of solids (ISO 1515)    24%
viscosity (DIN 53211, nozzle 4 mm, 23°C)  20 sec.
Saponification value (DIN 30672)    25 mg KOH / g   
temperature range:
pipe surface application temperature:  - 40°C to + 70°C
pipe operating temperature:   - 60°C to + 70°C
consumption:
machine application   app. 0,1 litre/m2 pipe surface
manual application   app. 0,2 litre/m2 pipe surface