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 6650-00-400-4977
NSN 6610-00-760-9916
NSN 5925-01-608-1522
NSN 6220-00-357-1933
NSN 6150-01-021-8289
NSN 6645-00-780-5260
NSN 6150-00-765-8394
NSN 5960-01-216-7004
NSN 4140-01-394-6982
NSN 5996-01-399-6677
NSN 6110-00-672-9304
NSN 6145-00-871-9112