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 5999-01-429-8560
NSN 5965-01-652-6645
NSN 6650-01-580-1586
NSN 6685-01-257-1799
NSN 6685-01-468-5471
NSN 2925-01-055-7607
NSN 6220-01-200-6461
NSN 5905-01-327-4629
NSN 5855-01-350-2454
NSN 5835-01-493-1826
NSN 2925-01-012-3162
NSN 5990-01-081-0619