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 6135-01-090-5365
NSN 5930-01-361-2547
NSN 6150-01-105-0200
NSN 5835-00-537-7780
NSN 5910-01-608-5641
NSN 5930-00-934-0387
NSN 2925-00-447-0788
NSN 5996-01-197-7005
NSN 6240-01-013-8895
NSN 6105-00-868-3006
NSN 6620-01-100-8899
NSN 5999-00-221-8601