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 6105-00-707-5962
NSN 5920-01-593-7909
NSN 5998-01-089-7041
NSN 5999-01-462-4383
NSN 5990-00-697-8883
NSN 5920-01-159-2589
NSN 6320-01-521-0377
NSN 5990-00-811-9780
NSN 5999-00-424-3100
NSN 2925-01-327-3069
NSN 5915-01-207-3478
NSN 6135-01-041-3829