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 6320-01-325-3620
NSN 5910-01-387-4954
NSN 6110-01-032-7570
NSN 5930-00-419-0231
NSN 5996-01-109-0230
NSN 5935-00-919-8506
NSN 6610-00-903-6095
NSN 6105-01-320-6532
NSN 5990-01-472-2447
NSN 6320-01-476-6767
NSN 2925-01-597-9541
NSN 6145-00-900-6157