Pass-Thru Interlock Chamber Remove welded parts independent of the oven. Purging Gas Controls and dual interlock doors maintain gas integrity in atmosphere chamber. Click Image for Larger View Search for: Our Products: • Projection Welders • Seam Sealers • Spot/Gap Welders • Lid Tackers • Atmosphere Chambers • Vacuum Bake-Out Ovens • Accessory Items • Hermetic Sealing Services