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 5985-01-653-4032
NSN 5855-00-117-0857
NSN 5895-01-061-1758
NSN 5950-01-434-1707
NSN 5835-00-279-6626
NSN 6150-01-419-8013
NSN 5998-01-354-6197
NSN 6610-00-166-7406
NSN 6320-01-643-0850
NSN 6150-01-320-2852
NSN 6620-01-552-2889
NSN 5990-01-524-8954