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 6620-00-296-6762
NSN 4140-01-158-9515
NSN 6610-01-599-4462
NSN 6130-01-334-4366
NSN 5975-01-220-8127
NSN 5998-01-486-5478
NSN 5930-01-004-9916
NSN 5855-01-422-5413
NSN 7035-01-012-8658
NSN 5920-00-135-4930
NSN 7035-00-865-9105
NSN 6110-00-617-4646