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 5996-00-169-9036
NSN 6130-00-344-8161
NSN 6145-00-770-1618
NSN 5985-01-158-8040
NSN 4140-01-168-7685
NSN 6645-01-445-9089
NSN 6150-01-628-5868
NSN 5915-01-526-9787
NSN 6130-01-584-9057
NSN 6110-01-438-5305
NSN 5990-01-571-7468
NSN 6110-01-506-5909