Plumbers Putty is a ready mixed, waterproof, non-setting putty designed for sealing and bedding w/c soil pipes, joints in sanitary wear, sinks and waste water fittings. Plumbers Putty will seal ceramics, vitreous enamels, metals and PVC. Plumbers Putty remains permanently flexible to allow for joint movement, is overpaintable and is compatible with Everflex Silicone Sealants.