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 5895-01-395-0759
NSN 5990-00-164-1198
NSN 6150-00-437-1265
NSN 5935-01-106-1172
NSN 6130-01-200-8212
NSN 5910-00-296-8816
NSN 5960-00-594-0824
NSN 6645-01-465-4915
NSN 6610-01-509-9913
NSN 6135-01-255-9129
NSN 6110-01-101-3799
NSN 5855-01-145-8973