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 6240-01-633-9357
NSN 2925-00-408-9829
NSN 5905-01-386-3006
NSN 6320-00-194-4252
NSN 6150-01-474-6532
NSN 5895-00-280-7528
NSN 6650-01-292-2963
NSN 5960-00-912-7630
NSN 5965-01-487-4479
NSN 5990-01-188-7309
NSN 5930-01-433-9984
NSN 5855-01-100-3272