Sharkbite pex tubing is a cross-linked polyethylene pipe for a range of residential and commercial plumbing applications. this pipe is approved for all potable water systems and is also available in red and white colors. sharkbite pex is approved for crimp, clamp or push-to-connect plumbing systems. the pipe comes with a repeating sharkbite imprinted pattern which serves as a visual aid to determine if the tube has been inserted correctly into sharkbite push-to-connect fittings. this feature only works if the tubing is cut between the sharkbite imprint pattern.