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 6685-01-139-4132
NSN 5910-00-401-8834
NSN 6150-00-098-1794
NSN 5935-01-563-3011
NSN 5905-01-373-3835
NSN 7035-01-524-0493
NSN 5965-01-615-0535
NSN 6145-01-578-8782
NSN 4140-01-155-8363
NSN 5855-01-361-9787
NSN 6110-01-063-7423
NSN 6105-00-782-1857