CUT. PUSH. DONE. The SharkBite barb connection system is the best option for connecting PEX tubing in water distribution systems when lower material cost is desired. The SharkBite Connection System makes any plumbing project fast and easy with our unique push-to-connect technology. When you insert a pipe into the SharkBite quick connect fittings, the stainless-steel teeth bite down and grip the pipe, while the specially formulated O-ring compresses to create the perfect watertight seal. SharkBite push connect fittings are the no fuss way to fix small leaks or plumb a whole house. Whether you need to repair a broken pipe or plumb a whole house, SharkBite fittings are the push-to-connect solution for leak-free results.