These fittings are composed of a knurled stainless steel nut and a double ended PEEK™ ferrule.

The PEEK™ ferrule simply slides over any 1,58 mm OD tubing to its required position, while the nut is finger tightened. It will not crush the tubing and can be easily readjusted for quick column changes. The unique double ended ferrule design seals at two points to prevent leaks.

The fittings are compatible with any standard female HPLC fitting, including Swagelok®, Parker™, Waters®, Valco® and Whatman®. Also used with SGE GLT™ columns.