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 5905-01-492-6784
NSN 5999-01-634-0576
NSN 5990-00-220-5689
NSN 6620-01-390-9551
NSN 5925-01-571-8640
NSN 5910-01-605-2233
NSN 6620-01-091-3722
NSN 5930-00-255-4173
NSN 5996-01-062-4622
NSN 5945-01-234-1522
NSN 2925-01-018-1348
NSN 6110-00-539-9543