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 5960-01-431-4291
NSN 2925-01-325-3974
NSN 6150-01-141-7749
NSN 5920-01-276-0430
NSN 6645-00-145-6411
NSN 6320-01-551-3553
NSN 5990-01-242-2538
NSN 5990-00-719-4947
NSN 5935-01-498-8147
NSN 6150-01-569-2552
NSN 6610-01-450-5688
NSN 5915-00-007-3813