U-TIGHTSEALU-Tightseal retains its properties as metal gasket while also exhibiting elastomere-like properties due to its excellent compression characteristics and elastic recovery. Structure and principle ■ Externally ring-shaped with a circular cross-section and an elastic core (coil spring) in the center, covered by one or two layers of metal coating. It functions as a seal when assembled at the actuation point with a specific amount of compression for each model. ■ During the process of compression and decompression, airtightness is achieved from W0 to W2 to the W1 point. Possible manufacturing range varies depending on material, cross-section diameter and inner diameter ■ It maintains airtightness over a wide range of thermal and pressure cycles. ■ No traces of the flange surface due to small surface pressure. • Seal inner diameter: 6mm to 2000mm • Seal cross-section diameter: 1.6mm to 14mm ■ Sizes are available to meet flange groove standards. •G25-G300 Bolt size and number of bolts are different from those of O-rings. ■ Multiple settings available for the material of the outer coating. ■ Plating is also available ■ Flat shapes such as rectangle, trapezoid, racetrack, etc. can also be produced. (standard is ring shape) Purpose ■ Vacuum and ultra-high vacuum Can be used in environments where the use of elastomeric O-rings and gaskets is restricted due to temperature, corrosion, pressure, radiation, gas