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 6650-00-186-5966
NSN 5975-01-387-5798
NSN 6105-01-599-5240
NSN 6220-00-084-4240
NSN 4140-01-435-5412
NSN 6610-00-500-6944
NSN 7035-00-973-3331
NSN 5960-00-011-9315
NSN 6320-00-330-4327
NSN 5910-01-355-8782
NSN 6620-01-246-7133
NSN 6620-01-541-1561