Underseal spray is a solvent-based, bitumen-free underseal based on rubber and resins. When thoroughly dry, the coating provides a permanently flexible, adherent protective barrier which is very resistant to abrasion and offers reliable protection against corrosion and impact from stones. The material is highly rigid and has fast drying properties. The coating can be painted over after it is thoroughly dry. The dried film has good adhesion properties on cleaned substrates and both unpainted and painted surfaces.
- elastic protection
- can be painted over when dry
- low atomization during use
- excellent stone-impact protection with antidrumming effect
Processing temperature: 15 - 25 °C
Density at 20 °C: 0,84 g/cm³ - DIN 51757
Recommended storage temperature: 5 - 25 °C
Drying time: 1 h
Wet coating thickness: 400 - 500 ìm dry film
Propellant: Dimethylether (DME)
Solids content: 25 %
Thermal stability: -25 to 120 °C
Base: rubber and resin
Risk of frost damage: no
Flash point: -41 °C - DIN 53213 (PenskyMartens, closed cup)
Shelf life in original sealed container: 30 months
Areas of application
Underseal spray is suitable for the coating of unpainted and painted surfaces, predominantly for vehicle underbodies and repairing or supplementing existing PVC- or rubber/resin-based coatings. Underseal spray is mainly used for aftertreatment or repair work on areas of vehicle underbodies which are difficult to access (such as angles, corners and edges etc.) and where rust tends to form.
Surfaces which have to be treated with underseal spray must be thoroughly cleaned beforehand. Rust must be removed. The surfaces must be dry and free of wax, dirt and grease and extensively free of dust.
The material is best suited for use at room temperature. Shake can vigorously. When the ball has worked loose, continue to shake the can for a further minute. Hold the can vertically when spraying and spray thinly at a distance of about 20 - 30 cm from the surface. The resistance to abrasion and corrosion increases with increasing coating thickness. For this reason, the spraying process should be repeated once or twice after a short flash-off period. Underseal spray should be sprayed using a cross pattern to avoid spray shadowing.
After use, the can must be inverted and sprayed until the valve is clear of the product, with only propellant escaping.
Do not spray material onto moving parts and hot components such as mechanical joints, the engine, gearbox, drive shaft, exhaust pipe, catalytic converter and