FESTO Push-To-Connect Fittings are top quality and highly reliable. While most products are fixed, there are some offerings that have a bearing system which allows for free rotation or swivel functionality. Suitable for a wide variety of air, water, and chemical applications which include, but not limited to: water purification, water treatment, agriculture, reverse osmosis, car/truck washes. Secure and leak-proof connections without tools. Rated to 145 PSI. High-alloy stainless steel retaining claws. Housing material is nickel-plated brass. Tubing seal is NBR (nitrile buna). MPT ends come standard with coating to ensure good thread connection. Releasing ring material is POM (polymer).