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 5855-00-922-6459
NSN 5998-00-505-2057
NSN 6150-00-001-9103
NSN 5999-01-253-1888
NSN 6320-01-183-8196
NSN 5965-01-547-4779
NSN 5920-00-952-1374
NSN 2925-01-016-3111
NSN 5996-01-531-6491
NSN 2925-01-376-6760
NSN 2925-00-211-4469
NSN 2925-00-614-1758