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 6320-01-309-9595
NSN 6130-01-044-5436
NSN 6135-01-159-9705
NSN 6150-01-506-6206
NSN 5945-00-561-1396
NSN 5925-00-233-5125
NSN 6320-00-823-2015
NSN 5910-01-098-9962
NSN 6645-01-235-9465
NSN 5965-00-829-3804
NSN 6685-01-431-7927
NSN 6105-01-241-0535