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 6110-01-423-7889
NSN 6110-00-368-8198
NSN 5905-01-630-7963
NSN 4140-00-816-0603
NSN 6685-01-235-8039
NSN 5985-01-426-2943
NSN 5996-01-505-4239
NSN 5960-01-362-7463
NSN 6610-00-840-6187
NSN 2925-00-875-7994
NSN 5835-01-116-2369
NSN 6650-01-145-5173