Skew resisting hydrodynamic seal

Patent · 01 January 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

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accommodate
accommodates
adequate
as-manufactured
character
circumference
coefficient
compared
complete
compression
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dynamic
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environment
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forth
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gland
hydrodynamic
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integral
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interrupted
lubricant
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maintains
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minimize
non-newtonian
nos
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rotary
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set
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shuttling
skew
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spring
stiff
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thermal
thermal expansion
type
variations
wear