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 5950-00-086-2423
NSN 5835-01-018-6294
NSN 6320-01-302-5157
NSN 6135-01-478-9316
NSN 5999-01-597-6866
NSN 6105-00-246-7116
NSN 5930-01-493-2917
NSN 6110-00-056-1565
NSN 5950-00-144-4139
NSN 5945-00-564-4043
NSN 5905-01-023-7575
NSN 5930-01-186-2021