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 5905-00-353-1659
NSN 5985-01-534-6407
NSN 6150-00-624-2483
NSN 5965-00-894-0015
NSN 6135-01-604-8739
NSN 6110-01-608-3775
NSN 5930-01-513-1429
NSN 6620-01-236-6290
NSN 5925-00-956-5715
NSN 5960-00-182-7375
NSN 5925-01-165-7053
NSN 6645-01-623-8825