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 5950-00-132-6900
NSN 5915-01-437-8858
NSN 6135-00-112-8637
NSN 7035-00-922-5700
NSN 5996-01-019-0664
NSN 6320-01-576-6310
NSN 6110-01-605-6957
NSN 7035-01-378-9325
NSN 2925-01-434-6945
NSN 5998-01-134-4222
NSN 5965-00-289-6280
NSN 6610-01-034-0798