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 5855-01-195-2518
NSN 5855-01-406-7237
NSN 6110-01-206-9877
NSN 6145-01-462-1764
NSN 6105-00-541-8472
NSN 5945-01-459-4724
NSN 6135-01-433-2062
NSN 6685-00-582-1215
NSN 5960-00-223-8381
NSN 6645-00-079-1430
NSN 6105-00-834-0169
NSN 6650-01-467-2355