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 6130-01-450-6796
NSN 6610-00-435-1493
NSN 5999-00-149-0624
NSN 5990-01-411-4596
NSN 6220-01-415-3350
NSN 5930-00-766-8554
NSN 6320-01-056-1164
NSN 2925-00-071-4197
NSN 6650-00-197-7563
NSN 5985-00-922-0387
NSN 6645-00-674-9728
NSN 5945-00-688-2808