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 5950-01-417-3119
NSN 6620-01-625-2855
NSN 5915-00-868-5674
NSN 7035-01-354-9382
NSN 7035-00-092-4356
NSN 5945-01-192-6708
NSN 5990-00-373-9787
NSN 6610-01-019-5827
NSN 6685-00-679-9965
NSN 5996-00-336-3046
NSN 6135-01-647-0386
NSN 2925-01-069-5324