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.
Spain 
Kuwait 
Canada 
France 
Germany Classification: Gaskets,washers & other seals
NSN 6145-01-582-1811
NSN 5985-01-314-3490
NSN 2925-01-167-6500
NSN 5895-01-296-1866
NSN 6220-01-030-2697
NSN 5985-00-227-7653
NSN 6320-01-155-4807
NSN 6645-01-322-5644
NSN 6620-01-642-1843
NSN 2925-00-530-3673
NSN 7035-00-225-6499
NSN 5975-01-529-6376