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 6320-01-442-3428
NSN 7035-00-235-3529
NSN 5920-01-560-4199
NSN 6110-00-199-1616
NSN 5910-01-594-6577
NSN 5895-01-366-3021
NSN 6220-01-401-5337
NSN 5915-00-935-4984
NSN 5930-01-452-5543
NSN 6220-01-067-8142
NSN 6650-01-207-0829
NSN 6620-00-254-5127