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 5990-00-844-5659
NSN 5945-01-170-6666
NSN 6220-01-062-2077
NSN 5990-01-229-8567
NSN 5925-00-975-7105
NSN 6610-00-292-9895
NSN 4140-01-433-6573
NSN 5930-01-012-1939
NSN 5960-00-665-5180
NSN 5835-01-408-7576
NSN 5895-01-133-2027
NSN 6150-00-500-4712