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 5910-01-216-0073
NSN 5910-00-539-2773
NSN 5915-01-296-8974
NSN 5998-00-177-1242
NSN 5910-01-578-6247
NSN 5999-01-325-3581
NSN 5930-01-232-9865
NSN 5915-01-571-5494
NSN 6620-00-907-2670
NSN 6650-00-534-2323
NSN 2925-00-167-2641
NSN 6610-01-585-9255