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 5999-01-628-8711
NSN 6220-00-396-0039
NSN 5910-01-406-2852
NSN 5975-00-268-8231
NSN 5975-01-559-1965
NSN 5835-01-408-0621
NSN 5915-01-519-6675
NSN 5835-01-486-4191
NSN 5985-00-882-3016
NSN 6320-01-039-5891
NSN 5835-01-519-3834
NSN 5950-00-965-5030