Re-usable
September 1st 2004

Corrosion resistant seal-lock self locking collar nuts from Bollhoff Fastenings eliminate the need for separate washers, packing or coated seating surfaces. They are a one-piece, re-usable, high-performance fastener that seals against gas or fluid pressures up to 450bar, even after the joint has been disassembled and re-tightened up to five times.

Initial assembly torque and operating performance are maintained throughout a temperature range of -40 to 110C.

The special locking feature maintains torque, resisting the loosening effect of shock loading or vibration.