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 5996-01-622-2744
NSN 6145-00-840-5577
NSN 5990-01-314-2264
NSN 5990-01-250-4198
NSN 6645-01-483-1518
NSN 5965-01-411-9933
NSN 7035-01-238-5036
NSN 5945-01-344-2504
NSN 2925-01-068-3844
NSN 5895-00-270-6595
NSN 6110-01-171-0362
NSN 5835-01-359-2575