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 6240-01-062-1684
NSN 5855-01-408-3154
NSN 5935-01-428-6143
NSN 5935-00-973-8554
NSN 2925-01-448-2880
NSN 5960-00-963-1285
NSN 5990-01-370-3672
NSN 5999-01-141-6859
NSN 2925-00-627-3307
NSN 5975-00-170-3623
NSN 5965-01-497-2723
NSN 5975-00-732-7911