J type vacuum rubber seals
Standards: JB / T 1090-1991
Applies: the external pressure of the vacuum chamber, the vacuum pressure is higher than 1E-4Pa rotary vacuum mechanical equipment seal, at a specified temperature and the rotation speed of less than 2m / s, speed less than 2000min-1.
Skills requirement
3.1, the working medium for mechanical pump oil, diffusion pump oil or vacuum grease.
3.2, the working temperature of -25 ~ +80 degrees.
3.3, in the case of gas-filled gas protection, the protection of gas pressure is not higher than 5E +4 Pa.
3.4, the physical and mechanical properties of rubber material should ensure that the vacuum chamber pressure is not higher than 1E-4Pa.
3.5, J-type vacuum rubber ring work surface should be smooth, does not allow air bubbles impurities, uneven uneven defects, the appearance of its non-surface quality indicators should be consistent with the provisions of Table 2.
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