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Class Information
Number: 277/528
Name: Seal for a joint or juncture > Seal between relatively movable parts (i.e., dynamic seal) > Circumferential contact seal for other than piston > Contained or compressed by gland member in packing box > Helically coiled packing
Description: Seal for the gland and packing box under subclass510 wherein the seal has a spirally wound structure between the parts along their axis of relative motion.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6553639 |
Method of manufacturing seals |
Apr. 29, 2003 |
| 6082739 |
Gland packing |
Jul. 4, 2000 |
| 6045136 |
Split sealing element |
Apr. 4, 2000 |
| 6039325 |
Resilient braided rope seal |
Mar. 21, 2000 |
| 5803464 |
Gland packing |
Sep. 8, 1998 |
| 5301960 |
Improved spirally-formed seal for shafts and valve stems |
Apr. 12, 1994 |
| 5022660 |
Lantern ring coil |
Jun. 11, 1991 |
| 4934657 |
Graphite spiral packing for stuffing box and method for manufacturing the same |
Jun. 19, 1990 |
| 4844479 |
Structure of a gland packing box |
Jul. 4, 1989 |
| 4796351 |
Gaskets |
Jan. 10, 1989 |
| 4239245 |
Packing seals and method of making |
Dec. 16, 1980 |
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