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 6135-00-835-7210
NSN 5835-01-346-7442
NSN 6150-01-142-2709
NSN 2925-01-058-1718
NSN 5905-01-296-6770
NSN 5930-01-348-8962
NSN 6110-00-784-0262
NSN 5990-01-305-7228
NSN 6110-01-468-6691
NSN 4140-01-495-0865
NSN 5920-00-291-1379
NSN 5935-01-434-8339