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Title: Skew resisting hydrodynamic seal

Abstract

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.

Inventors:
 [1];  [2];  [3];  [3]
  1. Pearland, TX
  2. Sugar Land, TX
  3. Houston, TX
Publication Date:
Research Org.:
Kalsi Engineering, Inc. (Sugar Land, TX)
OSTI Identifier:
874112
Patent Number(s):
US 6315302
Assignee:
Kalsi Engineering, Inc. (Sugar Land, TX)
DOE Contract Number:  
FG03-96ER82199
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /277/

Citation Formats

Conroy, William T, Dietle, Lannie L, Gobeli, Jeffrey D, and Kalsi, Manmohan S. Skew resisting hydrodynamic seal. United States: N. p., 2001. Web.
Conroy, William T, Dietle, Lannie L, Gobeli, Jeffrey D, & Kalsi, Manmohan S. Skew resisting hydrodynamic seal. United States.
Conroy, William T, Dietle, Lannie L, Gobeli, Jeffrey D, and Kalsi, Manmohan S. 2001. "Skew resisting hydrodynamic seal". United States. https://www.osti.gov/servlets/purl/874112.
@article{osti_874112,
title = {Skew resisting hydrodynamic seal},
author = {Conroy, William T and Dietle, Lannie L and Gobeli, Jeffrey D and Kalsi, Manmohan S},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/874112}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Works referenced in this record:

A Novel High-Pressure Rotary Shaft Seal Facilitates Innovations in Drilling and Production Equipment
conference, April 2013


Elastohydrodynamic Lubrication of Offset O-Ring Rotary Seal
journal, July 1981


Wear of elastomeric seals in abrasive slurries
journal, September 1998