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 5945-00-558-9155
NSN 5990-00-877-9838
NSN 6685-00-009-6844
NSN 6135-00-347-0595
NSN 5915-00-808-9052
NSN 5895-00-827-0240
NSN 5996-01-446-8198
NSN 6105-01-361-3270
NSN 5835-01-632-6627
NSN 5920-00-584-4592
NSN 6220-01-421-4448
NSN 6645-01-629-6343