PEEK Bulkhead Unions

PEEK bulkhead union
  • Easy connection of transfer/solvent lines
  • Low dead volume
  • Completely inert and biocompatible

Bulkhead unions are designed to be mounted through an instrument panel or on a bracket. Typically the mounting nut goes inside the instrument, so that the long threaded portion will be out of sight.

VICI Jour PEEK bulkhead unions are usable with most common organic and inorganic HPLC solvents without risking corrosion, metal contamination, or protein degradation that might occur with stainless steel.

Small diameter bores are used to ensure low dead volume connections. These unions have the standardized Valco fitting details with smooth transition of the taper into the threaded part.

Tubing OD Description Bore (mm) Qty/pkg Product No.
1/16" Bulkhead union with fittings 0.25 1 JR-ZBU1CFPK
0.50 1 JR-ZBU1MFPK
0.75 1 JR-ZBU1FPK
Replacement one-piece 10-32 black
PEEK fingertight fittings
5 JR-55021-5
  JAM-Nut replacement mounting nut
for bulkhead fittings


  • For 1/16" OD tubing
  • Material: PEEK
  • Threads: 10-32
  • Pressure rating:
    <350 bar (5000 psi)
    (Varies with tubing material and ID)




Bulkhead unions require a minimum 10 mm panel hole.