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 6240-01-534-1271
NSN 6645-01-296-2301
NSN 6685-01-227-5471
NSN 5990-01-425-2175
NSN 5925-01-284-1760
NSN 5925-00-633-6236
NSN 6610-01-263-2409
NSN 5998-01-519-8354
NSN 5950-00-467-0075
NSN 5960-01-259-3846
NSN 6110-00-066-9614
NSN 5920-01-425-2754