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 5960-01-011-4395
NSN 4140-01-558-6224
NSN 5985-01-521-0040
NSN 6135-00-995-1089
NSN 5990-01-202-0001
NSN 6240-01-019-1997
NSN 6135-00-826-4798
NSN 5895-01-004-0650
NSN 5975-00-601-2407
NSN 6240-00-120-0140
NSN 6135-01-142-2417
NSN 5835-01-629-2044