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 5985-00-932-5333
NSN 5960-00-471-6286
NSN 5945-01-634-0588
NSN 6105-00-538-0862
NSN 5910-00-286-4416
NSN 5835-01-384-3206
NSN 5998-01-377-9397
NSN 5905-01-555-8077
NSN 6150-00-469-4301
NSN 5945-01-429-9824
NSN 5996-01-607-5845
NSN 6110-00-913-6474