Macrotech Polyseal, Inc.

A Todd Hagen

Tadd McBride

Daniel K Zitting

J Thomas Duke

According to one embodiment, a composite seal may include a first, substantially annular seal element having an upper body portion, a neck portion, and an axial protrusion. The upper body portion includes opposing inclined surfaces extending toward the neck portion defining a first angle. The axial protrusion includes opposing inclined surfaces extending toward an axial end of the axial protrusion defining a second angle, wherein the first angle and the second angle are substantially similar. The composite seal may further include a second, substantially annular seal element having a mouth portion, a neck portion and a recess portion, wherein the axial protrusion is configured to be complementarily engaged with the recess portion in an interlocking manner.

Composite seals, seal structures and related methods

A seal having a body portion, at least one lip portion extending from the body portion, and a protrusion formed on the at least one lip portion. The lip portion and protrusion formed thereon may each include an arcuate segment wherein the arcuate segment of the protrusion exhibits a smaller radius than the arcuate segment of the lip portion. The protrusion further includes a surface or a segment adjoining its arcuate segment on the intended fluid or upstream side of the seal. The segment of the protrusion on the intended fluid side may be configured to be substantially perpendicular with the surface of a machine element with which it comes in contact. The configuration and orientation of the protrusion enables the seal to apply an increased contact force over a reduced area, improving penetration of any fluidic film formed on the surface of the machine element and thereby reducing leakage.

Growing community of inventors

Murray, UT, United States of America

A Todd Hagen