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 5905-00-688-7497
NSN 6645-00-204-4100
NSN 5925-01-529-6836
NSN 6105-01-012-4176
NSN 4140-01-220-9171
NSN 5975-01-092-6762
NSN 5998-01-209-9131
NSN 6145-00-502-1828
NSN 5996-01-250-7374
NSN 5985-01-605-2470
NSN 6240-00-372-4841
NSN 5930-01-383-8202