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 5950-00-556-9373
NSN 5930-01-510-3712
NSN 6150-01-057-5048
NSN 5895-00-123-2140
NSN 6220-01-386-6510
NSN 5835-00-378-1429
NSN 4140-01-561-6883
NSN 6105-01-131-8425
NSN 6645-00-318-5721
NSN 5965-01-103-5133
NSN 6650-01-329-6350
NSN 5835-01-388-5198