Parker TrueSeal™ Cartridge Inserts allow you to machine or mold a tube connection into your equipment or components. By using cartridge inserts, you will reduce your material and assembly costs, reduce potential leak paths, and give your equipment a new, clean profile by eliminating the need for threaded connections. TSC cartridge inserts consist of one O-ring, one cartridge, and one collet. Assembly Instructions: Step One - Machine or mold the receiving orifice as per instructions found in the TrueSeal™ Cartridge Insert Data Sheet located in the additional documents section on the Harrington website; Step 2 - Place the cartridge insert squarely onto the prepared port opening making sure that the barbs of the cartridge are going into the hole and the lettering on the face of the cartridge is visible; Step 3 - Using a rubber mallet or press, insert the cartridge into the first gland orifice until its face is flush with the top surface of the port; Step 4 - Insert the O-ring into the cartridge and seat it evenly into the second gland orifice; Step 5 - Insert the collet into the cartridge opening; Step 6 - Insert tubing.