D.O.T. Air Brake Fittings for Nylon Tube

These fittings are designed for easy assembly, eliminating the need for tube preparation or flaring, and they come with built-in tube support. They feature a ribbed sleeve that ensures compression and a secure grip. Additionally, they can be adapted for use with copper tubing by replacing the nut, sleeve, and insert with a long nut and spherical sleeve, with the insert being removed for copper tubing applications.

For air brake systems, except in situations where temperatures exceed 200°F or where battery acid may drip onto the tubing.

-40°F to 200°F at maximum operating pressures.

Fair Resistance.

• Cut a smooth, square end on the tubing
• Slide nut and then the sleeve onto tube – threads facing the end
• Insert the tube into fitting
• Thread the nut to the body until its tight, and then
  upto 1/4″   3 turns
  3/8″,1/2″   4 turns
  5/8″,3/4″   3 1/2 turns

Meets specifications & standards of SAE & D.O.T. FMVSS 571.106. For genuine STERLING D.O.T. Fittings look out for ‘STR’ marking.