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  • Problems with the Glass to Metal Seal in Electronics
    The glass to metal seal is a truly essential phenomenon in electronics, used in the manufacture of a wide range of products. From the "old-fashioned" (but still ubiquitous) incandescent light bulb to vacuum tubes, electric discharge tubes, and semiconductor diodes, to the reed switches in laptops
  • New glass-to-metal seal is close to perfect
    A process that takes place at temperatures to 1,000 C hermetically seals optical glass to an alloy frame. The empty frame on the left is produced by FloMet's metal-injection technology of an alloy with the same coefficient of thermal expansion as the glass in front of it. The process joins the two
  • Wire Seal Flanges
    MDC Wire Seal Flanges provide a convenient method of metal-sealing relatively large diameter vacuum chambers. These metal seal flanges pick up where the Del-Seal™ CF flanges Del-Seal™ CF metal seal flanges leave off.
  • Del-Seal CF Flanges Introduction
    MDC established its standing in the vacuum components world after becoming one of 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.
  • Difference Between Metal OD And Rubber Covered Seals (.pdf)
    Over the years, customers have asked us what's the difference between a rubber O.D. and a metal O.D and are there any special considerations when replacing a metal-cased seal with a rubber covered seal. The following article provides an explanation of the differences in seals designed with a metal
  • Felt Seals
    a function of density. However, about 78% of the volume of a felt seal serves as oil storage. Felt seals maintain constant sealing pressure in spite of wear, end play, minor misalignment, or out-of-roundness of metal assemblies. Top speed for felt seals is usually 2,000 fpm. There are applications
  • Face Seals
    of the sealing faces is usually metal or ceramic and the other is usually graphite or plastic. To keep precision seal faces closed in the absence of hydraulic pressure, some form
  • Better than metal
    matrix allowing end caps to be held in place using fiber circumferential contraction forces. Designers of pneumatics and low-pressure hydraulics often grapple with the dual challenges of reducing friction and weight. For traditional metal cylinders and bushings, these properties can limit design
  • Mind Over Metal: Master Impurities
    Operational Excellence & Lean Six Sigma What Can Insulated Metal Panels Do for a Drug Manufacturing Facility? Medical Imaging Monitors Pharmaceutical Process Health The Desired State: PAT and the Road to Enlightenment Purdue Research Park Center to Manufacture Lilly Drug Industrial Interoperability
  • Selection Factors for Seals
    elements have been used up to 650 F. Above 650 F, metal bellows, U-cups, or piston rings can be used, but these seals are considered specials. Lubrication can reduce heat generation at the seal interface, but care must be taken to prevent coking. Direct cooling with a cooling chamber and heat exchanger

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