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 6240-00-928-7181
NSN 6110-00-816-9715
NSN 5975-01-295-3196
NSN 5920-01-510-3933
NSN 5960-00-902-0942
NSN 5999-01-251-9156
NSN 6145-01-399-2350
NSN 5930-01-328-5178
NSN 6110-01-605-2450
NSN 5999-01-442-3529
NSN 5935-00-090-8375
NSN 4140-00-878-1222