Our heavy duty vacuum chamber is perfect for removing gases from compounds which have become entrapped in the mixture when mixing components. Vacuum chambers are required to assure a bubble-free mold when mixing resin and silicone rubbers and slower setting resins. Our vacuum chamber greatly reduces gas bubbles and pockets that would weaken the epoxy or silicone. Clear lid allows you to see air being vacuumed out of your resin mix. Built-in valve and gauge provides ease of use and convenience. Glycerin filled industrial gauge resists vibrations and keeps the gauge accurate to within 0.5inHg. This vacuum chamber is perfect for degassing silicone, epoxy resin, solvents and more! Package Includes: 1 x 5 Gallon Vacuum Chamber. 1 x 3/4" Acrylic Lid. 1 x Heat Treated Silicone Lid Gasket. 1 x Glycerin Filled Gauge with Brass Fittings. 1 x 50 Micron Air Filter. 1 x Non-Stick Silicone Pad. 1 x 5 Foot Steel Wire Collapse-Proof Hose. 1 x Instruction Manual.