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 6220-00-919-8172
NSN 5835-01-259-0859
NSN 5925-01-419-4258
NSN 5960-01-398-9538
NSN 5835-00-458-4392
NSN 5920-01-151-2773
NSN 6645-01-146-3323
NSN 5930-00-336-4615
NSN 5960-01-082-4491
NSN 5996-01-216-8136
NSN 5905-00-683-2770
NSN 5930-01-522-3777