Patent ID: 6264205
Filing Date: 2001-07-24
Classification: F16J

Abstract:
A rotary cartridge seal comprising:a cold flowable plastic ring having body means for sealably engaging a housing bore and lip means for sealably engaging a shaft rotating within said housing bore;spring means, disposed between the body means and the lip means, for biasing said lip means against the shaft;separable metal retainer means for fixing said plastic ring and spring within said housing bore and around said shaft, said separable metal retainer means having a surface of revolution with a rear portion having a radius suitable for press fitting into said housing bore and a front portion of lesser radius ending in a ring, said rear portion and ring being connected by a thin spring portion; andmeans defining an internal groove in said body means for engaging the ring therein in order to latch the plastic ring and metal retainer means together with residual stress in a radial direction within the plastic ring due to biasing action by the retainer means spring portion.