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 4140-00-615-8623
NSN 5895-01-621-8163
NSN 5935-01-449-1341
NSN 5960-00-658-7209
NSN 6220-00-218-0857
NSN 5920-01-579-7485
NSN 5985-01-270-0667
NSN 5930-00-868-2551
NSN 6645-01-222-5468
NSN 5930-01-074-2681
NSN 5895-00-937-7227
NSN 6685-01-116-3422