Bite-type fittings for metal tubing | Parker Ferulok® (SAE J514, MIL-F 18866)

The Parker Ferulok bite type flareless fitting's robust construction and proven sealing characteristics have gained it worldwide popularity in diverse industries and applications where a strong, flareless fitting is needed.

All Parker Ferulok flareless fittings conform to SAE J514 specs. Parker bite type fittings for metric applications, EO & EO-2, conform to ISO 8434-1 standards. Some Ferulok fittings conform to the requirements of specification sheets MS518XX under MIL-F-18866, and others do not. Contact Hose & Fittings. Etc. for conformance details.

Ferulok bite type flareless fittings are available in steel and stainless steel and can be furnished in other materials by Hose & Fittings. Etc. on request.

A bite type fitting is sometimes incorrectly referred to as a compression fitting. Compression fittings are designed for use with soft tubing and are not interchangable with bite type fittings!

The Ferulok bite type fitting is a flareless fitting that consists of a body, a one-piece precision machined ferrule, and a nut. On assembly, the ferrule “bites” into the outer surface of the tube with sufficient strength to hold the tube against pressure, without significant distortion of the inside tube diameter. The ferrule also forms a pressure seal against the fitting body.

Parker Ferulok fittings allow the fitting assembler to visually inspect the bite quality, thus significantly minimizing the risk of improper assembly and related service problems.

Available Configurations

For information on sizes and pricing, please call us at 888.715.4673, email us at or fill out a contact form on this page to get answers to your questions.