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    • 3. 发明申请
    • ROTARY SHAFT SEALING DEVICE
    • 旋转轴密封装置
    • WO1992007207A1
    • 1992-04-30
    • PCT/US1991004987
    • 1991-07-18
    • ROTOFLEX, INC.
    • ROTOFLEX, INC.SIMMONS, Brian
    • F16J15/34
    • F16J15/3456F16J15/3472Y10S277/914Y10S277/936
    • A dry face seal (10) for preventing leakage around a rotary shaft (60) extending through a structural casing comprises an annular stationary rigid seal (26) and a rotary seal (20). The stationary seal, secured to the structural casing for surrounding the rotary shaft, has a smooth sealing surface for establishing a dry face seal. The resilient rotary seal means is adapted to be secured to the rotary shaft and has an annular projecting edge means (75) for containing the smooth sealing surface under a biased pressure to form a dry face seal in conjunction therewith. The resilient rotary seal means comprises a carbon filled thermally resistant polymer composition having a durometer hardness of from about 85 to about 91, and preferably comprises a fluorocarbon filled with finely divided carbon black.
    • 用于防止在延伸穿过结构壳体的旋转轴(60)周围的泄漏的干面密封件(10)包括环形静止刚性密封件(26)和旋转密封件(20)。 固定在结构外壳上用于围绕旋转轴的固定密封件具有用于形成干面密封的光滑的密封表面。 弹性旋转密封装置适于固定到旋转轴上,并且具有环形突出边缘装置(75),用于在偏压下容纳光滑的密封表面以与之结合形成干面密封。 弹性旋转密封装置包括具有约85至约91的硬度计硬度的填充碳的耐热聚合物组合物,并且优选地包括填充有细碎炭黑的碳氟化合物。