SharkBite 25406A Silicone Wrap for Underground Burial of SharkBite Fittings Stretches up to 300% for easy use Creates watertight seal by bonding within minutes Working temperature of -65f to over 500f Asse 1017 Asse 1070 Csa B125.3 Nsf/Ansi 372 Nsf/Ansi61