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 5855-00-357-1158
NSN 5985-01-624-7712
NSN 2925-00-759-5465
NSN 6320-01-145-9013
NSN 5915-01-047-6368
NSN 6135-01-231-0444
NSN 6145-01-047-4345
NSN 5965-00-913-9545
NSN 5965-01-128-4381
NSN 6320-00-369-1333
NSN 2925-01-203-0493
NSN 5895-00-596-8678