Impact-resistant, 2-shot STK thermoplastic elastomers, available in hardnesses from 40 Shore A to 90 Shore A, can be overmolded, twin shot molded, or coextruded in one operation. Properties and design negate need to use silicone gaskets or insert them into housings, while rubbery material improves housing and gasket aspects. Resistant to household cleaning products, elastomers overmold onto diverse substrates: PC, ABS, PC/ABS, acrylic, PBT, PS, PP, PE, copolyester, and polyamides.