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 6220-01-006-4481
NSN 6150-00-928-2960
NSN 2925-01-265-2853
NSN 5835-01-426-6573
NSN 6105-01-440-4606
NSN 6620-00-953-8570
NSN 5920-01-376-4926
NSN 6105-00-075-2487
NSN 6645-01-085-4214
NSN 5925-01-592-6939
NSN 6220-01-497-7229
NSN 5999-00-415-5353