Cure-in-place process for seals
Abstract
A cure-in-place process which allows a rubber seal element to be deformed to its service configuration before it is cross-linked and, hence, is a plastic and does not build up internal stress as a result of the deformation. This provides maximum residual strength to resist the differential pressure. Furthermore, the process allows use of high modulus formulations of the rubber seal element which would otherwise crack if cured and then deformed to its service configuration, resulting in a seal which has better gap bridging capability. Basically, the process involves positioning an uncured seal element in place, deforming it to its service configuration, heating the seal element, curing it in place, and then fully seating the seal.
- Inventors:
-
- Corona Del Mar, CA
- Issue Date:
- OSTI Identifier:
- 863774
- Patent Number(s):
- 4244908
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29D - PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- DOE Contract Number:
- EG-77-C-03-1308
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- cure-in-place; process; seals; allows; rubber; seal; element; deformed; service; configuration; cross-linked; hence; plastic; build; internal; stress; result; deformation; provides; maximum; residual; strength; resist; differential; pressure; furthermore; modulus; formulations; otherwise; crack; cured; resulting; gap; bridging; capability; basically; involves; positioning; uncured; deforming; heating; curing; seating; process involves; differential pressure; seal element; process allows; provides maximum; rubber seal; internal stress; cure-in-place process; /264/175/
Citation Formats
Hirasuna, Alan R. Cure-in-place process for seals. United States: N. p., 1981.
Web.
Hirasuna, Alan R. Cure-in-place process for seals. United States.
Hirasuna, Alan R. Thu .
"Cure-in-place process for seals". United States. https://www.osti.gov/servlets/purl/863774.
@article{osti_863774,
title = {Cure-in-place process for seals},
author = {Hirasuna, Alan R},
abstractNote = {A cure-in-place process which allows a rubber seal element to be deformed to its service configuration before it is cross-linked and, hence, is a plastic and does not build up internal stress as a result of the deformation. This provides maximum residual strength to resist the differential pressure. Furthermore, the process allows use of high modulus formulations of the rubber seal element which would otherwise crack if cured and then deformed to its service configuration, resulting in a seal which has better gap bridging capability. Basically, the process involves positioning an uncured seal element in place, deforming it to its service configuration, heating the seal element, curing it in place, and then fully seating the seal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}