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 5999-01-205-6331
NSN 6105-01-486-6207
NSN 6150-00-018-8646
NSN 5999-00-054-6362
NSN 5930-00-164-5274
NSN 2925-00-763-5061
NSN 7035-00-020-2227
NSN 6105-01-054-8583
NSN 5998-01-509-1958
NSN 5985-01-165-4380
NSN 6320-00-110-8005
NSN 6645-01-550-9669