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 5920-01-062-1369
NSN 5925-01-461-5248
NSN 6240-01-463-8276
NSN 5935-01-009-2055
NSN 5910-00-035-5534
NSN 6645-00-308-4179
NSN 6110-01-300-0802
NSN 2925-00-908-7702
NSN 5965-01-231-9125
NSN 6240-01-016-4889
NSN 4140-00-279-3148
NSN 5945-01-334-6016