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 5999-00-099-6889
NSN 5996-01-144-4691
NSN 5985-01-654-1791
NSN 2925-01-290-8208
NSN 5920-01-572-5689
NSN 6685-00-450-4496
NSN 2925-01-324-3533
NSN 4140-00-808-5336
NSN 5965-01-419-5982
NSN 6645-01-047-9724
NSN 5855-01-433-3197
NSN 5855-00-688-9954