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 6105-00-135-2180
NSN 5910-00-902-6449
NSN 2925-01-511-2667
NSN 5835-01-424-0054
NSN 5910-01-648-4656
NSN 5935-00-006-7540
NSN 5835-00-546-4898
NSN 5855-01-462-2628
NSN 5925-01-421-4473
NSN 5975-00-772-5668
NSN 2925-00-671-5464
NSN 5998-01-069-9698