Oatey PP85526 Plastic Pipe Insert 3/8 Inch Od 2 Pack

Product Description

The OATEY PP85526 is a brass insert fitting designed for use with plastic tubing at 3/8 inch outer diameter. Insert fittings of this type seat inside the tube end to maintain bore shape and prevent the tubing wall from collapsing when a compression or clamp-style fitting is tightened down. This part ships two inserts per package, making it a practical addition to any service pouch or truck stock. Plumbers and pipe fitters working with flexible plastic tubing - including PEX, polyethylene, or similar soft-wall tubing - rely on inserts like these to ensure a leak-free, long-lasting connection at every joint.

Plastic pipe inserts are used throughout residential and light commercial plumbing systems wherever soft or flexible plastic tubing terminates at a fitting. Common install scenarios include supply line connections, irrigation headers, and water service piping. The 3/8 inch OD sizing suits smaller-diameter tubing runs typical in fixture supply and filtration applications. The brass construction provides corrosion resistance and the structural rigidity needed to support fitting engagement without deforming under tightening torque.

Key Features

• Brass construction for corrosion resistance and dimensional stability under compression
• Sized for 3/8 inch OD plastic tubing to maintain bore integrity at the fitting junction
• Prevents tube wall collapse when compression or crimp fittings are tightened
• Two inserts included per package for efficient stocking
• Compact form factor suitable for truck stock and service kits

Compatibility

Designed as an OEM-style insert for 3/8 inch OD flexible plastic tubing, including PEX and polyethylene supply lines, used with standard compression or crimp-style fittings in plumbing applications.

Installation Notes

Installation is performed by licensed plumbers or qualified pipe fitters in accordance with the International Plumbing Code. Shut off the water supply and relieve line pressure before cutting and fitting any tubing. Press the insert fully into the tube end before seating the compression nut or crimp ring - partial insertion will result in a failed joint. Inspect the tube end for clean, square cuts with no burrs before inserting.