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 2925-01-587-3956
NSN 5960-00-905-9693
NSN 5999-00-411-6159
NSN 5935-01-600-0849
NSN 6110-01-528-6813
NSN 5910-01-519-2308
NSN 5935-00-266-0208
NSN 5835-01-364-6830
NSN 4140-01-378-5190
NSN 5945-00-606-6695
NSN 6320-00-790-4844
NSN 6610-01-423-3608