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 5996-01-578-3757
NSN 6240-01-068-3491
NSN 5835-01-479-7908
NSN 4140-01-660-4143
NSN 6240-01-391-5373
NSN 6110-01-116-2348
NSN 5998-01-310-9205
NSN 5910-00-939-8222
NSN 5915-01-359-4847
NSN 5925-01-323-0113
NSN 6105-01-407-8697
NSN 5950-01-065-6435