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 4140-01-065-8148
NSN 7035-01-364-8454
NSN 5910-00-233-8005
NSN 6220-01-054-0331
NSN 6130-00-910-7027
NSN 7035-01-095-9322
NSN 6320-00-036-3688
NSN 5935-00-203-5592
NSN 5935-01-100-3083
NSN 5960-00-304-8668
NSN 5910-00-405-7898
NSN 2925-01-079-6229