Skew resisting hydrodynamic seal

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:874112

Conroy, William T ^[1]; Dietle, Lannie L ^[2]; Gobeli, Jeffrey D ^[3]; Kalsi, Manmohan S ^[3]

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1. Pearland, TX
2. Sugar Land, TX
3. Houston, TX

A novel hydrodynamically lubricated compression type rotary seal that is suitable for lubricant retention and environmental exclusion. Particularly, the seal geometry ensures constraint of a hydrodynamic seal in a manner preventing skew-induced wear and provides adequate room within the seal gland to accommodate thermal expansion. The seal accommodates large as-manufactured variations in the coefficient of thermal expansion of the sealing material, provides a relatively stiff integral spring effect to minimize pressure-induced shuttling of the seal within the gland, and also maintains interfacial contact pressure within the dynamic sealing interface in an optimum range for efficient hydrodynamic lubrication and environment exclusion. The seal geometry also provides for complete support about the circumference of the seal to receive environmental pressure, as compared the interrupted character of seal support set forth in U.S. Pat. Nos. 5,873,576 and 6,036,192 and provides a hydrodynamic seal which is suitable for use with non-Newtonian lubricants.

• Research Organization: Kalsi Engineering, Inc. (Sugar Land, TX)
• DOE Contract Number: FG03-96ER82199
• Assignee: Kalsi Engineering, Inc. (Sugar Land, TX)
• Patent Number(s): US 6315302
• OSTI ID: 874112
• Country of Publication: United States
• Language: English

Related Subjects

skew
resisting
hydrodynamic
seal
novel
hydrodynamically
lubricated
compression
type
rotary
lubricant
retention
environmental
exclusion
geometry
ensures
constraint
manner
preventing
skew-induced
wear
provides
adequate
gland
accommodate
thermal
expansion
accommodates
as-manufactured
variations
coefficient
sealing
material
stiff
integral
spring
effect
minimize
pressure-induced
shuttling
maintains
interfacial
contact
pressure
dynamic
interface
optimum
range
efficient
lubrication
environment
complete
support
circumference
receive
compared
interrupted
character
set
forth
nos
5873576
6036192
non-newtonian
lubricants
thermal expansion
set forth
dynamic seal
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