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 5985-00-513-3420
NSN 6145-00-432-4840
NSN 5855-00-631-4565
NSN 6150-01-441-4592
NSN 5990-01-312-2638
NSN 6105-01-590-7509
NSN 5945-00-504-8993
NSN 5985-01-394-1589
NSN 5835-01-227-2318
NSN 6650-01-341-5330
NSN 6105-01-090-7491
NSN 5999-00-522-1252