MDC Vacuum

Engineered Process Solutions

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MDC Vacuum Products, LLC was founded in 1975 to serve a rapidly expanding vacuum industry and to satisfy the increasing demand for high quality vacuum components with fast delivery and reasonable prices. From its inception, MDC has strived to establish itself as a first class catalog-order vacuum components company, without compromising its commitment to quality and service.

MDC established its standing in the vacuum components industry after becoming  the first licensed manufacturers of Varian’s patented Conflat® metal-seal flange, known today to most MDC customers as the Del-Seal™ CF metal-seal flange.  Reputation for quality, continuous process improvement, innovation and reliability have made MDC a coveted provider of vacuum instruments and components the world over.

MDC’s customer base is as varied as its product line. Some of our customers include national laboratories, colleges and universities, original equipment manufacturers and domestic as well as international commercial accounts.

Over thepast three decades MDC has dedicatedextensive resources to the development, implementation and production of practical, dependable and accessible vacuum solutions, this is evident today by its vast selection of standard off-the-shelf vacuum components. From the simplest of airtight seals to complex electron-beam coating instruments, MDC’s product line provides a comprehensive solution to the world’s scientific and industrial vacuum community.

The MDC product line has evolved against a backdrop of careful research and development as well as the implementation of the latest in automated manufacturing techniques. Multiple axis Mazak® CNC machining centers are at the heart of all metal machining operations at the Hayward, California facility. These sophisticated, robotically controlled machines are designed for continuous operation producing finished components from raw stainless steel.

Engineering and design are routinely implemented using 3D Modeling/Solid- Works and Finite Element Analysis (FEA) computer workstations networked with one central system which is accessible to all production facilities. The main manufacturing facilities, located in Hayward California, contains 107,000 square feet of manufacturing space. Over ninety-five percent of MDC products are manufactured and stocked at this location.

MDC’s ceramic seal product line is manufactured at our plant located in Sarasota, Florida, producing MDC’s high and ultrahigh vacuum ceramic-to-metal seal electrical feedthroughs and optical viewports. MDC maintains substantial inventory levels of its basic catalog components so it can respond quickly to urgent customer needs and requirements. Within the continental US, every effort is made to ship stock components the day after an order is received. In the event that an item is not in stock, or if the component is required with a special size, type or quantity, a firm delivery date will be established and quoted by the MDC technical sales engineers.

MDC has assembled a worldwide network of distributors and representatives forming an experienced staff of vacuum scientists, engineers and technicians which provide the support and communication channels necessary for a solid and long-term business partnership. This network was constructed by recruiting prominent and reputable sales organizations from around the world which share MDC’s commitment to quality and service. In the United States and Canada, sales representation is divided into smaller state and provincial territories. In the Pacific Rim market, MDC has representatives in Australia, China, Japan, Korea, Malaysia, Singapore, Taiwan and Thailand.

Representation for the entire European continent is provided through sales offices in the United Kingdom, France, Germany and Italy. In the Middle East, representation is available in Israel. For a current, detailed listing of all MDC sales representatives, complete with names, addresses, telephone and fax numbers, visit our website at

MDC is committed to producing quality products that set the industry standard. In keeping with this commitment MDC has successfully completed its registration to the ISO 9001: 2008 standard.

Flanges & Fittings
Del-Seal CF Flanges
Del-Seal CF Fittings
Wire Seal Flanges
Kwik-Flange™ ISO KF
Large-Flange™ ISO LF
ISO KF & LF Fittings
ANSI ASA Flanges
Weldable Components
Hybrid Adapters

Gate Valves
Angle & Inline Valves
All-Metal Valves
Fine Leak
Precision Leak
Butterfly Valves
Bell Jar Systems
Surface Science
Standard Chambers
Spherical Chamber
D-Shape Chamber
Cylindrical Chamber
Box  Chamber
Chamber Support Frames

Roughing Components
Foreline Traps
Vacuum Pumps
Vacuum Hoses & Accessories
Vacuum Measurement
Pressure Relief
UHV Burst Disks
Pop-Off Pressure Relief

Motion & Manipulation

Temperature Control
Heavy Insulated Heating Tape
Silicon Rubber Heating Tape
Heating Cords   
Temperature Controllers 
Custom Components
Vacuum Components Made to Order
Modifications to Standard Parts
Chamber Geometry

Customer Service

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