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 6685-00-823-7790
NSN 5998-00-754-5186
NSN 6135-01-315-4328
NSN 6610-00-935-7131
NSN 5950-00-851-9716
NSN 5910-01-125-1746
NSN 5910-00-520-1788
NSN 5895-01-520-8348
NSN 5996-00-823-8487
NSN 5999-01-605-8462
NSN 5935-01-423-8421
NSN 6645-00-704-3630