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 6620-01-316-5487
NSN 6135-01-277-7397
NSN 5990-01-357-6175
NSN 5920-01-046-1062
NSN 5915-01-065-1127
NSN 5965-01-620-5320
NSN 5960-01-437-7422
NSN 6130-01-147-3932
NSN 2925-00-432-3410
NSN 5945-01-281-5610
NSN 5915-00-287-5062
NSN 6620-01-431-9176