Black Swans Stay Soft Plumbers Putty is a special formulated putty which will stay soft and flexible and will not shrink, bleed, harden, crack or crumble. It is gas proof, odor proof and water resistant. Black Swan’s Stay Soft Plumbers Putty can be used for setting toilet bowls, fixtures, faucets, strainers, basin cocks, sink frames, and many other sealing and caulking applications.
