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 5945-00-255-4033
NSN 5920-01-373-1018
NSN 5960-01-431-4291
NSN 5930-01-132-3247
NSN 5935-00-291-4910
NSN 5945-01-048-3780
NSN 5985-01-107-2749
NSN 2925-00-964-7128
NSN 5945-00-834-7865
NSN 6650-01-453-1144
NSN 4140-01-212-6964
NSN 6130-01-067-9383