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 5960-01-097-0645
NSN 5965-00-362-2158
NSN 6645-01-279-2414
NSN 6685-00-481-6673
NSN 5975-00-942-1925
NSN 6685-01-211-6590
NSN 6110-01-659-8232
NSN 6145-00-192-7215
NSN 6650-01-049-1881
NSN 5998-01-270-5556
NSN 6645-01-248-3123
NSN 5950-01-604-9435