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 5920-00-486-8822
NSN 4140-01-362-7117
NSN 6135-01-523-3198
NSN 5905-01-394-5374
NSN 5935-01-461-7680
NSN 6130-00-935-0378
NSN 5985-01-272-9623
NSN 6645-01-385-7033
NSN 6110-00-891-9917
NSN 6130-01-400-6123
NSN 6240-00-555-6347
NSN 5905-00-369-0446