- Instrumentation > Fitting > Tube
Larger tube fittings require more effort to assemble properly. The Hydraulic Pre-Setting (HPST) helps ensure efficient and consistent fitting assembly. Interchangeable die sets allow easy conversion from one tube O.D. to another. Using the HPST, the GYROLOK nut and ferrule system is set onto the tubing. The pre-set ferrules are then easily affixed to the tube following the GYROLOK reassembly instructions.