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 5925-00-473-2622
NSN 6220-01-449-5814
NSN 5999-01-559-6653
NSN 5990-01-552-5386
NSN 6685-01-184-9211
NSN 5996-00-017-9189
NSN 6320-01-547-9877
NSN 5999-01-391-9098
NSN 6145-01-099-9114
NSN 5950-00-781-6828
NSN 5930-00-221-0980
NSN 6620-00-720-3278