1.Description:Top Best 666 is a neutral sealant with excellent weather resistant properties. It is non-hardening, water and dust proofing compound that forms a tough skin but should remain permanently soft and sticky beneath.It has flexibility across temperatures and it is anti corrosive. To conclude it has properties as followed: (1) nondrying /non-hardening(2) water and dust proofing(3) anti corrosion(4) elastic and non shrink(5) weather resistant:will not cause staining and resistant to aging and weathering(6) can be used to bond dissimilar materials together (metal, Wood, Glass, GRP, Plastics etc) 2.Application:It is a unique all purpose adhesive and sealant designed for the build and repair of caravans motorhomes and trailers. It is a professional grade that can be used externally and internally and bonds and seals in one operation. Top Best 666 is Ideal for bedding seams, rails, window and door frames and mouldings in caravan, holiday homes etc.