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 5998-01-048-5959
NSN 5996-01-275-0706
NSN 5960-01-481-3722
NSN 4140-01-555-8190
NSN 6145-00-689-9339
NSN 5835-00-698-9824
NSN 5930-01-201-2313
NSN 5985-01-377-7175
NSN 6105-01-360-3850
NSN 5930-00-275-3132
NSN 6220-01-381-6830
NSN 6240-01-418-5021