Baseplates and Basewells for High Vacuum Systems

A Baseplate can be installed by placing a Bell Jar or Feedthrough Collar directly on top of it. The bell jar-to-baseplate seal is made with either a Viton® L-gasket or O-ring, depending on which Feedthrough or Bell Jar model is used. Standard MDC Base Wells are the integral combination of a Baseplate and a Feedthrough Collar, and eliminate one vacuum seal with a weld.

Base Wells include four, eight or eighteen convenient feedthrough ports to bell jar vacuum systems. These ports accept a range of feedthrough devices and other components mounted on mating Del-Seal™ CF 2-3/4" flanges or Kwik-Flange™ KF NW40 sizes. If access ports are not needed, Bell Jars can be mounted straightaway on Baseplates.

Both Baseplates and Base Wells connect to the vacuum pumping system with either a regular smooth face ASA ANSI flange, or optional Del-Seal™ CF metal seal flange or Large-Flange™ LF bolt-style. Seals for any ports or flanges are not included with Basewells or Baseplates. For side port flanges or pump port flange, refer to individual flange specifications in Section 1 of the MDC catalog.

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Key Features

  • 2-3/4" Del-Seal™ CF flange or Kwik-Flange™ KF NW 40 port connections on Basewells
  • Elastomer seal surface
  • Standard ASA pump port flange, with optional Del-Seal™ CF or ISO Large-Flange™ LF port
  • All type 304 stainless steel construction

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