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 5965-01-541-0879
NSN 6135-00-284-1406
NSN 5975-01-117-6468
NSN 6105-01-416-4029
NSN 5975-01-463-3173
NSN 6610-01-523-2100
NSN 5895-01-421-3508
NSN 5999-01-181-5695
NSN 6650-01-517-7903
NSN 6685-00-172-9764
NSN 5935-00-633-8302
NSN 4140-01-453-2493