Bison poly max crystal clear polymer construction adhesive sealant bison 6308546 bison poly max crystal is a high quality crystal clear polymer suitable for use both as an assembly adhesive and as a sealant it is ideal for bonding fixing and sealing practically all construction materials to practically all smooth porous and non porous substrates it can be used both indoors and outdoors and is extra strong and remains permanently elastic bison 6308546 poly max crystal 300g