Metric fittings are manufactured in several high performance materials that are FDA and NSF-61 certified for drinking water. Rated 140 F @ 100psi / 75 F @ 250psi Sea Tech's state of the art design allows a simple snap connection to plastic, CPVC, and copper tubing. SeaTech fittings are quickly and easily installed without any special tools, compression sleeves, nuts, adhesives, welding, clamps, or crimps of any kind.