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 5950-01-537-0562
NSN 6620-01-408-4314
NSN 6685-01-084-1433
NSN 5910-00-336-4525
NSN 4140-01-266-0625
NSN 5930-00-400-2890
NSN 5960-00-557-6951
NSN 2925-01-305-1370
NSN 2925-00-215-4954
NSN 5960-00-466-2258
NSN 4140-01-576-0184
NSN 5935-01-040-6758