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 5990-01-080-0097
NSN 5855-01-133-3587
NSN 6240-01-476-7935
NSN 5950-01-072-6381
NSN 5960-00-146-5338
NSN 6145-00-520-1714
NSN 5835-01-559-3824
NSN 5930-00-377-6799
NSN 5935-01-210-0943
NSN 6620-01-224-9007
NSN 6220-00-235-3565
NSN 6610-01-579-0134