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 6645-01-435-6373
NSN 5965-00-296-9994
NSN 5985-01-462-8801
NSN 4140-01-646-3016
NSN 6240-01-576-0884
NSN 5950-01-351-6681
NSN 6105-00-788-3827
NSN 5920-01-310-2927
NSN 6130-01-626-5016
NSN 6645-00-079-4087
NSN 5835-01-065-5281
NSN 6145-01-504-0420