Best current price£22.15from eBay
Shopping.co.uk recommended and popular offers
eBay£22.15Visit shop 3 X Tetroseal Aerosol Underbody Sealant Car Underseal Spray 500ml Protection
Visit shop2 offers from £22.15 - £24.17
View price history by clicking the chart icon.
The Tetroseal Aerosol Underbody Sealant is designed for vehicle owners and DIY mechanics who want to extend the life of their car's chassis by protecting it against harsh environmental elements. This high-quality coating creates a durable, long-lasting black barrier that prevents corrosion, moisture ingress, and damage from road debris. While it offers excellent protective properties, users must ensure the underbody is meticulously cleaned and dried before application to guarantee proper adhesion and effectiveness.
| Model Part Number | Paint black finish long lasting protective coating |
|---|---|
| Brand | Tetroseal |
This 3-pack is generally sufficient for a thorough protective coating on most standard passenger cars.
It is highly recommended to remove loose rust and treat the metal with a converter first, as the sealant will not stop rust that is already active beneath the layer.
It is suitable for general underbody use, but should not be applied to exhaust systems or engine blocks.
Drying times vary based on ambient temperature and humidity, but it typically becomes touch-dry within a few hours and cures fully within 24 hours.
Yes, always mask off brake components, exhaust, and suspension bushings to prevent interference with their mechanical function.
Turn the can upside down and spray for a few seconds to clear the nozzle, or soak the nozzle tip in solvent.
This is typically caused by applying the product over grease, oil, or wet surfaces. Ensure the surface is degreased and bone-dry before application.
Apply multiple thin coats, allowing each to become tacky before applying the next, rather than one thick application.
Before starting, the underbody must be thoroughly pressure-washed to remove all dirt, grease, and loose surface rust. Use a wire brush on any visible corrosion and apply a rust converter if necessary before spraying. Ensure the surface is completely dry, as trapped moisture can cause premature peeling. Shake the canister vigorously for at least two minutes before use to ensure the contents are well-mixed. Keep the can 20-30cm away from the surface during application. For long-term maintenance, inspect the underbody annually and perform touch-ups on areas where the coating may have been scraped by road debris.
