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 5910-01-161-4718
NSN 7035-01-025-9312
NSN 5960-01-429-5897
NSN 5930-01-352-5428
NSN 5960-01-079-0660
NSN 5935-01-214-0969
NSN 6685-00-663-9000
NSN 6150-01-504-0820
NSN 6620-00-708-2688
NSN 5985-01-621-2171
NSN 5999-00-642-9021
NSN 6610-00-913-7069