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 5990-01-540-1619
NSN 5920-01-235-9522
NSN 6685-00-731-8633
NSN 5920-01-541-5030
NSN 6105-01-363-9225
NSN 5855-01-035-2866
NSN 5996-01-599-9867
NSN 6135-01-415-1163
NSN 5965-01-032-9146
NSN 5996-00-299-1609
NSN 5960-01-344-2604
NSN 7035-01-215-2449