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 5999-00-264-9504
NSN 5915-01-359-4847
NSN 6145-01-251-5092
NSN 6145-01-360-5863
NSN 5915-01-122-7591
NSN 6240-00-788-6972
NSN 5910-00-136-7694
NSN 5996-01-255-3281
NSN 6620-01-009-8809
NSN 6105-00-297-3762
NSN 5835-01-396-0640
NSN 5990-01-481-0164