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 6150-01-391-6106
NSN 5915-00-930-2117
NSN 5990-01-578-5382
NSN 5835-01-509-8992
NSN 4140-00-192-3811
NSN 5996-01-592-6898
NSN 7035-01-364-0286
NSN 6105-01-399-0695
NSN 5950-00-918-2132
NSN 5965-01-419-6624
NSN 5990-00-755-3015
NSN 4140-01-009-3003