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 5999-01-252-9210
NSN 6135-01-321-5659
NSN 6145-00-598-9397
NSN 7035-01-092-5723
NSN 5935-00-829-3206
NSN 5945-00-489-7054
NSN 6145-00-186-6291
NSN 5935-01-168-8074
NSN 6145-01-649-8002
NSN 5965-00-768-4366
NSN 4140-01-071-2977
NSN 5920-00-184-2100