A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5998-01-227-1827
NSN 5985-01-361-6122
NSN 5910-01-631-0397
NSN 5999-01-623-1834
NSN 6110-01-062-0252
NSN 5905-01-067-0853
NSN 5950-00-944-3608
NSN 5999-01-151-1700
NSN 5935-00-530-1473
NSN 6650-01-465-5362
NSN 6610-01-578-1976
NSN 5925-01-595-6276