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 5990-01-432-4984
NSN 6130-01-430-3330
NSN 5925-00-802-8626
NSN 5835-01-067-6619
NSN 5996-00-088-0584
NSN 5920-00-211-4512
NSN 5965-00-933-8971
NSN 5895-00-732-2433
NSN 5990-00-883-9721
NSN 5998-01-487-3540
NSN 5910-01-339-3199
NSN 5945-01-578-0282