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  • 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
  • Plastic Strap Seals and Loop Seals
    into a head or housing on the end, after the plastic strap is passed through the hasp of a container or door. If the seal is tampered with, the plastic strap changes color. Compared to metal seals, plastic strap seals and loop seals are less likely to injure personnel or damage equipment that comes
  • 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
  • Clearance Seals and Labyrinth Seals
    metal washer-like rings of varying diameters to create a labyrinth seal.
  • 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
  • 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
  • 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

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