Valve stem seal
Patent
·
OSTI ID:6098171
A fixed valve stem oil seal for a piston-type internal combustion engine is described, comprising: a cup-shaped case having a radially extending flange with a central aperture for the acceptance of a valve stem and an axially extending portion positively engageable with a valve guide, and a seal element disposed between the radial flange on the case and the valve guide and radially movable relative thereto, the seal element comprising an elastomeric ''O-ring'' having a first sealing surface engageable with the valve stem, a second sealing surface engageable with the radial flange on the case and a third sealing surface engageable with an upper radial surface of the valve guide so as to effect a seal between the valve and the valve guide.
- Assignee:
- Microdot Inc., Darien, CT
- Patent Number(s):
- US 4811703
- OSTI ID:
- 6098171
- Country of Publication:
- United States
- Language:
- English
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