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 6650-01-100-9964
NSN 5910-00-388-6737
NSN 5990-01-316-9477
NSN 5855-00-908-6402
NSN 5910-00-476-6950
NSN 5910-00-368-4108
NSN 5930-00-829-9019
NSN 5925-01-327-2731
NSN 5895-01-528-4054
NSN 5945-01-417-1358
NSN 5835-00-315-3797
NSN 6610-00-100-1195