GL Engineering’s Bulkhead Fitting System has been specially designed to ensure a leak tight connection of test wiring to environmental chambers.

Common applications include wiring pass-through connections for lyophilizers, autoclaves, dry heat ovens and vessels. Fittings for other applications can be custom designed to meet your requirements.


  • Operates in a wide range of temperatures and pressures — from full vacuum to 90 PSI pressure
  • Utilizes a replaceable seal for long-life and varied wire diameters in a single 316L stainless steel housing
  • Integrates a large quantity of test wires into a small diameter fitting (standard size allows 40 thermocouple wires through 75mm diameter sanitary fittings)
  • Provides connectivity for all common English and Metric sanitary fitting sizes (other fitting sizes and types available in custom configurations)


  • Repeatable: Consistent set-up from test to test
  • Efficient: Rapid operator setup and removal
  • Versatile: Same system operates from full vacuum up to high pressure applications
  • Compatible: One Bulkhead Fitting can accommodate all 48 thermocouple wires for new Kaye Validator AVS (Advanced Validation System)