Abstract: A hot melt composition for forming flowed-in closure liners or gaskets having a viscosity and resulting flow properties suitable for use in high speed, liner forming operations. The composition comprises between 20 and 55 percent of a thermoplastic elastomer chosen from the group consisting of block copolymers of the type having the general formula A-B-A or of the type having a plurality of chains of the general formula B-A radiating from a central hub. A is a thermoplastic segment, preferably polystyrene, and B is an elastomeric segment, preferably polybutadiene, polyisoprene, or polyethylene-butylene. The other ingredients in the composition may be extenders, antioxidants, fillers, pigments, lubricants, etc. as desired.An in-situ molded crown liner, ring-seal bottle cap gasket, roll-on closure liner, CT (screw) cap gasket, lug cap gasket, and snap-on cap gasket, made from the composition and containing no PVC, are disclosed.