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 5925-00-336-9150
NSN 5985-00-707-3473
NSN 6320-01-592-6248
NSN 5915-00-312-2652
NSN 5999-00-943-6751
NSN 6220-00-383-9402
NSN 5930-01-441-1932
NSN 6320-01-255-2096
NSN 6220-00-351-4556
NSN 6620-00-408-5478
NSN 5975-01-037-0460
NSN 5999-00-781-3116