Bullet Seal

摘要

A bullet seal tail section is reconfigured from a groove flanked by tapered surfaces that engage an o-ring seal to an end design on the bullet seal that has tapered surfaces that meet at a first angle and a pin with an end taper that has counterpart surfaces that slope more with respect to an axis of the seal. The o-ring is on an opposite side of the pin from the tail of the bullet seal. Large differentials evenly push out the bullet seal tail and uniformly compress the o-ring for a larger contact area at greater contact force than previously known. The o-ring is reformed into a generally quadrilateral shape from round due to the applied loading.

主权项

1. A bullet seal assembly for an annular space between opposed sealing surfaces, comprising:
at least one bullet seal member having a tail end comprising adjacent bullet seal surfaces; an o-ring; at least one pin disposed between said o-ring and said tail end to transmit differential pressure loading on said o-ring to said bullet seal adjacent surfaces in a manner to move said bullet seal adjacent surfaces to the opposed sealing surfaces.