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 5996-00-927-7729
NSN 6610-00-769-6826
NSN 6650-01-028-2820
NSN 6220-01-623-5919
NSN 6645-01-426-8621
NSN 5999-01-076-2758
NSN 6240-01-621-7646
NSN 4140-01-302-2638
NSN 5915-01-534-7614
NSN 5915-01-566-7954
NSN 6620-00-267-5273
NSN 5945-00-878-1242