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 6240-00-072-9966
NSN 6610-00-277-7206
NSN 5905-00-007-5970
NSN 6320-01-362-9518
NSN 5905-01-448-8392
NSN 6130-01-328-7536
NSN 5998-00-485-8571
NSN 6320-00-575-6072
NSN 5935-01-218-8226
NSN 5965-01-569-8634
NSN 5945-00-979-8258
NSN 5990-00-990-7030