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 5905-00-907-6318
NSN 5999-01-143-3633
NSN 6620-00-575-9230
NSN 2925-01-570-3696
NSN 5950-00-348-6740
NSN 6650-01-120-6231
NSN 6110-01-374-9007
NSN 5945-01-573-5746
NSN 5990-00-932-3070
NSN 5835-01-373-9506
NSN 6150-00-089-9503
NSN 5996-01-122-8288