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 5925-00-056-4635
NSN 6645-00-258-8547
NSN 5945-01-156-8559
NSN 5975-01-013-9743
NSN 6130-01-590-4705
NSN 5975-01-088-0484
NSN 5905-01-363-3152
NSN 5930-01-602-6312
NSN 5950-00-259-5234
NSN 5835-00-529-6307
NSN 5910-01-417-5997
NSN 5975-01-321-6558