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 6145-00-958-2027
NSN 6135-00-411-3171
NSN 5915-00-079-1011
NSN 5960-01-429-5897
NSN 5965-01-522-0404
NSN 6220-01-430-0442
NSN 6620-00-093-4186
NSN 5905-00-853-0923
NSN 5925-00-732-8916
NSN 6650-01-070-6271
NSN 5895-00-248-7477
NSN 5915-01-106-1207