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 6650-00-078-5773
NSN 5895-00-553-8345
NSN 5910-01-467-2404
NSN 5935-01-543-0041
NSN 5945-00-076-2588
NSN 5950-01-197-7625
NSN 6105-01-578-2118
NSN 5835-01-290-4397
NSN 6145-01-650-5713
NSN 6130-00-683-1011
NSN 5920-00-814-2328
NSN 6135-01-397-6564