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 5998-01-310-7611
NSN 5935-01-509-2018
NSN 5945-01-378-7268
NSN 5996-01-112-0154
NSN 2925-01-521-0600
NSN 6105-00-244-2392
NSN 6130-01-038-4616
NSN 5835-01-138-8622
NSN 2925-00-066-4253
NSN 6685-01-170-4926
NSN 5945-01-104-9104
NSN 5950-00-734-9281