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 5855-01-562-3132
NSN 6620-01-585-7903
NSN 5999-01-338-9246
NSN 6110-01-286-3035
NSN 6650-01-443-1476
NSN 5925-01-421-4473
NSN 5925-00-800-5350
NSN 5990-00-812-7608
NSN 6320-01-281-6028
NSN 6150-01-080-4536
NSN 4140-01-254-0435
NSN 5910-00-099-9998