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 5996-01-213-2335
NSN 5996-00-993-8185
NSN 6610-00-511-3328
NSN 5990-01-633-9503
NSN 5855-00-466-2309
NSN 6650-01-388-2538
NSN 5950-01-241-9242
NSN 5960-01-165-1956
NSN 5935-01-485-2457
NSN 5990-00-258-0228
NSN 6110-01-202-5946
NSN 4140-01-007-8902