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 5910-01-125-0530
NSN 7035-01-462-5766
NSN 2925-00-707-6770
NSN 5920-01-605-3232
NSN 5835-01-394-7589
NSN 5905-01-659-6962
NSN 5985-00-608-0869
NSN 5975-00-004-9431
NSN 5855-01-145-8973
NSN 5998-00-119-8330
NSN 5910-01-468-5571
NSN 2925-01-543-5571