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 6620-01-116-3983
NSN 6685-00-527-7952
NSN 5945-01-556-2444
NSN 6145-00-296-0085
NSN 5835-01-079-3658
NSN 6620-01-239-3804
NSN 6130-00-980-2032
NSN 6650-00-256-9059
NSN 6620-01-330-3917
NSN 5930-01-204-2512
NSN 7035-01-425-8063
NSN 6645-01-593-6149