US 6,550,779 B2 · Mechanical split seal

Abstract

A split seal component including a seal face comprising two seal face segments rigidly mounted in two holder halves and methods of assembly and installation. The seal face segments may each have a nose that is held snugly by each holder half and is supported axially. Aligning pins received in aligning holes of the holder halves may be used to align the face segments. A fixture may be used to axially align the seal segments. A split o-ring and inner axial wall may be included that position the seal face concentrically with a shaft. Each holder half may have an integral band that clamps and also positions the face segments concentrically with the shaft. The walls of the holder halves may be stress-relieved proximate the junctions of the holder halves. A kit is provided for a rotary seal component with a rigidly mounted seal face. Another seal component includes a seal face comprising two seal face segments resiliently mounted in two holder halves. Each seal face segment has a ridge that abuts against a split o-ring positioned in a recess in an outer wall of each holder half. An inner axial wall maintains the axial alignment of the seal face segments and, in conjunction with the split o-ring, retains the seal face and a biasing device in the holder half.

Claims31

Dependent claims

A split seal component, usable for assembly in a split seal, comprising:

a circular seal face including two seal face segments and having a primary sealing surface, an inner wall and an outer wall with an outer periphery;
a first holder half which, prior to such assembly, includes at least a first attached band section cantilevered therefrom and having a free end extending from a fixed end attached to the first holder half;
and
a second holder half which, prior to such assembly, includes at least a second attached band section cantilevered therefrom and having a free end extending from a fixed end attached to the second holder half;
prior to any attachment of the end of one band section to the end of another band section, each holder half including one said band section attached to the holder half, the first and second attached band sections positionable around a portion of said outer periphery when assembled in said split seal.

2 more elements

Dependencies are inferred from the claim text.

Mechanical split seal

Life of this patent

Mechanical split seal

Life of this patent

Abstract

Claims31