Topside Cavity Wax is Sierra's anti corrosive sealant for hidden door and body cavities in 4WDs, trucks, buses and trailers, in 20 L or 200 L drums.

What it does

Enclosed doors, sills and body sections are hard to reach and can hold water, so rust often starts inside them. Sierra makes Topside as an anti corrosive sealant and cavity wax to protect those hidden areas, and its SDS describes it as an automotive anti corrosion wax. In the drum it is a brown, viscous grease with a sweet paraffin smell, based on more than 30 per cent hydrotreated petroleum distillate. It is not miscible with water, and its flash point is over 130ºC.

Where to use it

Door and body cavities, on vehicles and on equipment. The vehicles Sierra lists are 4WDs, trucks, buses and trailers. For the exposed underside of the same vehicle, use Underbody, Sierra's black bituminous coating, so the inside and outside of the body are both covered. More in the rust and corrosion protection range.

How to use

1. Put on safety goggles and solvent resistant gloves before opening the drum.
2. Work in a well ventilated area and avoid breathing the vapour.
3. Apply Topside as supplied into the cavity. It does not mix with water, so never thin it with water.
4. Keep heat, sparks and open flame away while you work.
5. Reseal the drum, then wash your hands and any skin it touched.
   No application method or coverage figure appears in Sierra's catalogue or SDS; ask us before a first job.

Safe on / avoid

Keep Topside away from strong acids and strong oxidising agents. Its vapour is heavier than air and the product floats on water, so stop spills reaching drains or waterways. Read the Safety Data Sheet before use.

Specifications

Pack sizes and delivery

20L Drum and 200L Drum. Freight is quoted to your postcode at checkout.