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 5985-01-392-8337
NSN 6650-00-618-1118
NSN 6130-00-716-0770
NSN 5985-01-285-1557
NSN 5960-01-170-4057
NSN 5965-01-461-2850
NSN 5925-00-455-8584
NSN 6645-01-453-6184
NSN 5975-01-411-1424
NSN 5835-00-286-5432
NSN 6645-01-517-8189
NSN 6685-00-515-5239