Featured Product   FEATURES Two-piece design moulded from bio-compatible PEEK (Black colour) material. Specially designed nut and ferrule - Creates double compression of ferrule. Can be used confidently on both S.S. and PEEK tubes. Leakproof : Upto 9000 psi for S.S. tube : Upto 7000 psi for PEEK tube Strong Threads on nut increases durability. Cost - Effective.