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 6685-01-497-1962
NSN 6110-01-050-8119
NSN 5945-01-085-9804
NSN 4140-00-539-4814
NSN 6685-01-147-4532
NSN 5990-01-263-0362
NSN 4140-00-163-2868
NSN 6240-00-449-6003
NSN 4140-00-918-5162
NSN 6240-01-412-7803
NSN 5985-01-467-5574
NSN 5935-01-211-7821