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 5905-01-585-4128
NSN 6130-01-471-8421
NSN 5999-00-162-8932
NSN 5915-00-950-6493
NSN 4140-01-007-0590
NSN 6240-01-496-3847
NSN 5905-01-216-4519
NSN 7035-00-849-5526
NSN 5910-01-633-9963
NSN 5950-01-578-7857
NSN 4140-01-318-9357
NSN 6135-00-242-9531