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 6130-00-635-9853
NSN 6610-01-156-0810
NSN 4140-01-210-2212
NSN 6650-00-111-3399
NSN 5905-01-124-0502
NSN 5945-01-631-5431
NSN 5998-00-679-4001
NSN 5895-00-957-7029
NSN 5895-01-408-6551
NSN 6130-01-031-0896
NSN 5930-00-295-3859
NSN 5905-01-340-6192