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 5915-01-374-4390
NSN 6135-01-096-1452
NSN 6320-00-336-9123
NSN 5950-01-233-5882
NSN 6620-00-041-3406
NSN 5910-01-448-9780
NSN 6610-00-512-4183
NSN 5999-01-646-0792
NSN 4140-00-547-8918
NSN 5835-00-264-0946
NSN 5895-01-630-2265
NSN 5999-01-053-8714