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 2925-00-346-6968
NSN 6220-01-373-1245
NSN 5985-01-320-6757
NSN 5960-01-654-4353
NSN 5930-00-398-7477
NSN 5925-01-157-9548
NSN 6105-01-559-4579
NSN 5930-00-504-3657
NSN 2925-01-474-3363
NSN 6320-01-113-7647
NSN 5905-00-123-5817
NSN 6240-01-474-5446