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 6240-01-503-8717
NSN 2925-00-918-0859
NSN 5960-01-080-8451
NSN 5996-01-400-0917
NSN 5965-01-508-2537
NSN 5895-01-381-7747
NSN 6135-01-534-3007
NSN 5960-01-337-2823
NSN 2925-00-504-2363
NSN 6320-00-593-0379
NSN 6135-01-273-1253
NSN 5905-01-459-7549