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 6685-01-241-0159
NSN 5960-01-117-1887
NSN 5930-01-266-9792
NSN 5990-01-036-8080
NSN 5945-00-483-6711
NSN 6610-01-099-9710
NSN 4140-01-436-8149
NSN 5998-01-501-3310
NSN 5910-01-304-9768
NSN 5996-01-371-5617
NSN 6610-01-010-7108
NSN 5920-01-386-4195