Vacuum chamber 3/4 - 2"

MDC stainless steel bell jars are designed for use with MDC baseplates, base wells and feedthrough collars. A dovetail groove in the jar’s base flange holds a Viton® elastomer gasket, which makes the vacuum seal with one of the forementioned components. All stainless steel bell jars are fitted with a four inch view diameter Pyrex® viewport. All vacuum welds are internal and provide UHV compatibility. For added convenience, all bell jars are fitted with a hoist or lift-ring that is welded to the chamber’s domed top. These chambers can be purchased with an optional electropolished finish. Feedthrough Collars MDC feedthrough collars are used to expand the capabilities of conventional bell jars by providing radially oriented access ports. Four, eight, or eighteen ports fitted with either 2-3/4 inch Del-Seal™ CF metal seal flanges or ISO KF NW40 Kwik-Flange™ flanges are available. These ports accept a variety of standard MDC vacuum components such as electrical, fluid and motion feedthroughs. Installation of a feedthrough collar also requires the use of an MDC baseplate. The feedthrough collar is positioned between a bell jar and the baseplate. The feedthrough collar / baseplate seal is made with either an L-gasket or circular cross section elastomer, depending on which collar model is used. The feedthrough collar seal is made with an L-gasket elastomer. Stainless steel bell jars would use a circular cross section elastomer in the jar’s dovetail groove to make this seal.