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 5930-00-231-9795
NSN 6240-01-420-5905
NSN 5925-00-864-4293
NSN 5975-01-425-5156
NSN 5855-01-003-7102
NSN 5975-01-517-2938
NSN 5855-01-333-0969
NSN 5855-01-457-3608
NSN 5835-01-399-5820
NSN 2925-00-178-0940
NSN 5975-01-274-5344
NSN 5985-01-042-5310