We no longer stock this product, but can recommendHeskins H3506 Primeras a great alternative.
1704 Primer/Sealer improves adhesion, especially on porous surfaces, most non-porous surfaces do not usually require a primer but adhesion to certain highly polished surfaces can be improved by the use of 1704 Primer/Sealer. After application the product will appear milky but will turn clear upon drying. Uncovered primer will remain tacky and attract dirt, so only apply to areas that will be covered by the tape or tread.