1.Description:‍‍‍‍‍‍Top Best 666A is a non-drying bedding sealant. It has excellent resistance to severe conditions of heat, cold and moisture. It is elastic and non shrink, can provide strong watertight adhesion and be used to bond dissimilar materials together (Metal, Wood, Glass, GRP, Plastics etc).To conclude it has properties as followed: (1) nondrying(2) UV resistant(3) colour stable(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 one part polyurethane hybrid that can be used externally and internally and bonds and seals in one operation.  Ideal for bedding seams, rails, window and door frames and mouldings in caravan, holiday homes etc.