Patent ID: 7708283
Filing Date: 2010-05-04
Classification: F16J,Y10T

Abstract:
1. A holder for a rotary seal element in a split mechanical seal assembly comprising a sealing element having a diameter and a radially outer portion, comprising: an annular body comprising at least two mating, arcuate holder segments that mate to form the annular body; a stepped bottom surface on the annular body, the stepped bottom surface including a first sloped face extending radially and axially inward from an axially forward end of the holder, the first sloped face extending at a first angle relative to a longitudinal axis of the holder, and a second sloped face extending radially and axially inward from the first sloped face, the second sloped face extending at a second angle relative to the longitudinal axis of the holder, wherein the first sloped face and the second sloped face meet at a transition point; the first angle is between about 10 degrees to 20 degrees; the second angle is between about 2 degrees to 10 degrees; the second angle is smaller than the first angle; a stepped radially inner surface on the annular body, the radially inner surface including a detent groove having the shape of a radially outer half of a toms formed on an axially extending wall of the inner surface for seating a radially outer portion of a sealing element; and the ration between a depth of the detent groove and the diameter of the sealing element is between about 0.03 and about 0.05.