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 5975-00-872-7532
NSN 4140-01-176-0482
NSN 5920-01-055-2024
NSN 5960-01-180-4350
NSN 5975-00-395-9852
NSN 5925-01-097-3331
NSN 2925-01-213-6622
NSN 5996-00-525-1777
NSN 6620-01-286-6769
NSN 5996-00-102-5425
NSN 6110-01-420-1861
NSN 5925-01-411-6028