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 5975-01-170-4947
NSN 5920-00-971-6795
NSN 5915-00-763-9065
NSN 6610-00-887-2118
NSN 6650-01-463-4235
NSN 5960-01-206-0743
NSN 5945-00-983-4374
NSN 5915-00-495-4665
NSN 6240-01-625-1279
NSN 5975-00-297-3940
NSN 7035-01-443-3052
NSN 6145-01-347-1609