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 5925-01-397-0559
NSN 5945-01-321-0925
NSN 5935-01-359-9017
NSN 5915-01-535-2667
NSN 4140-01-426-8428
NSN 5905-01-313-5990
NSN 5915-00-393-1850
NSN 5950-01-084-2030
NSN 5965-01-190-6315
NSN 5999-00-323-9905
NSN 6645-00-819-5045
NSN 6110-01-535-6338