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 6110-00-643-0064
NSN 6610-01-608-5285
NSN 5930-00-636-8888
NSN 5920-01-567-6959
NSN 5996-00-181-0207
NSN 6685-00-286-8481
NSN 5925-01-036-1480
NSN 5999-01-057-5100
NSN 5996-01-566-6600
NSN 7035-01-448-4740
NSN 5905-00-004-5833
NSN 5905-00-229-3518