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 5999-01-029-9561
NSN 5998-01-304-9983
NSN 5975-01-457-1119
NSN 6610-01-476-9945
NSN 6105-01-108-4087
NSN 5990-01-443-2931
NSN 5905-01-128-2106
NSN 6130-00-816-7981
NSN 6130-00-202-4688
NSN 6620-01-401-5356
NSN 5920-01-144-8920
NSN 5950-00-709-2032