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 6620-00-481-1527
NSN 5999-00-967-8988
NSN 5935-00-064-4668
NSN 5950-00-572-5513
NSN 6150-01-322-4280
NSN 5910-01-377-5761
NSN 6130-01-106-3462
NSN 6685-01-042-6723
NSN 5905-00-852-8411
NSN 5960-00-981-8653
NSN 5855-01-571-6715
NSN 6610-01-441-8364