Features: Rubber caulking gasket to fit 2" Sch. 40 DWV drain pipe in the NO-CALK shower drains. For 42150, 42153, 42154, 42084, 42099, 42077, 42075, 42083, 42080. RUBBER CAULKING GASKET To fit 2" copper DWV drain pipe in the NO-CALK shower drains. RUBBER CAULKING GASKET To fit 1 1/2" DWV copper drain pipe in the NO-CALK shower drains.