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 5910-01-502-9149
NSN 5990-00-202-5127
NSN 5920-01-119-3652
NSN 5925-01-507-2373
NSN 6145-00-290-1759
NSN 4140-01-214-6380
NSN 6220-01-485-0333
NSN 2925-01-304-4567
NSN 5996-01-504-5876
NSN 6150-01-505-1946
NSN 5996-00-739-2315
NSN 5935-01-370-4877