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 5925-00-686-3364
NSN 5950-01-238-5791
NSN 6150-01-560-7475
NSN 6220-00-726-1953
NSN 5855-01-642-7607
NSN 5920-00-035-4846
NSN 6105-00-781-7231
NSN 6645-00-505-6026
NSN 5985-00-399-1174
NSN 6685-00-482-9477
NSN 5930-01-151-4087
NSN 5999-01-359-2087