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 5910-00-552-1720
NSN 5910-01-319-7170
NSN 5915-00-394-6523
NSN 5999-00-171-3432
NSN 5945-01-290-3880
NSN 6320-00-925-0558
NSN 6620-01-595-4691
NSN 6610-01-627-8985
NSN 6620-01-062-7163
NSN 5990-01-199-2846
NSN 5996-01-215-0944
NSN 5920-00-723-4554