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 5920-01-616-8870
NSN 5920-01-460-5495
NSN 5925-01-649-7842
NSN 5965-01-607-3874
NSN 6645-01-447-3143
NSN 5998-01-488-7783
NSN 5950-01-123-5541
NSN 5965-01-633-8849
NSN 6220-01-251-9299
NSN 6320-01-443-4972
NSN 6650-01-555-8049
NSN 6130-01-553-7893