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 6240-01-605-4455
NSN 6220-01-203-2096
NSN 6645-01-141-7016
NSN 6685-01-214-4626
NSN 5855-01-147-1509
NSN 5990-01-480-4294
NSN 6220-00-316-2500
NSN 5945-01-349-5690
NSN 5996-01-224-3548
NSN 6150-01-456-7140
NSN 6685-01-397-8694
NSN 2925-00-888-9551