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 5920-00-455-9743
NSN 6220-01-418-1889
NSN 6135-01-205-5965
NSN 5930-01-171-9444
NSN 6650-01-615-4842
NSN 5920-01-364-3465
NSN 5925-01-338-7939
NSN 5975-00-138-2549
NSN 5925-01-352-8905
NSN 5930-01-503-9864
NSN 5905-01-574-2157
NSN 6110-01-456-5775