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A viewport, sometimes referred to as a window, is an optical component that provides a means for visual, optical or broad-band energy transmission in and out of a vacuum system....

Glass viewports are an economical, practical and common solution for vacuum observation ports. Glass viewports are typically sealed to low expansion nickel-iron alloys or 300 series stainless steel metal sleeves using the latest in glass-to-metal bonding technology. The material in MDC glass...

Glass viewports are an economical, practical and common solution for vacuum observation ports. Glass viewports are typically sealed to low expansion nickel-iron alloys or 300 series stainless steel metal sleeves using the latest in glass-to-metal bonding technology....

All MDC quartz viewports are constructed from UV grade fused silica. Sleeve and flange materials are manufactured from high purity 304 stainless steel and vacuum tube grade braze alloys are designed and rated for high and ultrahigh vacuum applications. Fused silica is a polycrystalline, isotropic...

A Pyrex® substrate is sandwiched between two elastomer seals. The outer elastomer (top in drawing) is for cushioning and the inner elastomer (bottom in drawing) makes the vacuum seal....

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