underseal


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underseal

Brit
a coating of a tar or rubber-based material applied to the underside of a motor vehicle to retard corrosion
References in periodicals archive ?
Before that, however, the body of the camper van was taken along to Dudley to be dipped in acid to remove all the underseal, rust and paint.
Five coats of underseal and many hours of rubbing down and priming later, the Rapier was finally ready for spraying.
The builder needed to put in an underseal or hardcore and at that time slag from the steel-making process was used.
Metal sheet was replaced by newspaper, body filler, and heavy coats of underseal.