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 6645-00-079-1430
NSN 5996-01-308-3036
NSN 6135-00-107-6662
NSN 6240-01-378-3329
NSN 5915-00-965-0535
NSN 6145-01-054-7463
NSN 6135-00-856-1343
NSN 5915-00-928-5667
NSN 4140-01-452-9428
NSN 5945-01-086-3312
NSN 5920-01-212-9504
NSN 6620-01-064-0366