公开(公告)号：US20200173558A1

公开(公告)日：2020-06-04

申请号：US16209321

申请日：2018-12-04

Applicant: Caterpillar Inc.

Inventor： Christian Sabotta ,  John M. Mashak ,  Scott Rice ,  Tyler J. Davis ,  Nicholas O'Connor

IPC: F16J15/3236 ,  F16C33/74 ,  F16J15/3284 ,  F16C3/14

Abstract: A shaft seal for disposition between a shaft mounted for rotation and a bore includes a radial shaft-sealing sleeve assembly rotatably mounted with an outer carrier assembly. The radial shaft-sealing sleeve assembly includes a radial shaft-sealing sleeve and a first contact exclusion lip. The outer carrier assembly includes an outer carrier with a molded seal along having an outer radial section of the outer carrier and an elongated molded seal lip extending into a chamber formed between the radial shaft-sealing sleeve and the outer carrier, a second contact exclusion lip, and a main pumping lip. The first contact exclusion lip forming a dynamic seal against the outer carrier, and the second contact exclusion lip and main pumping lip forming dynamic seals against the radial shaft-sealing sleeve.