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 5990-01-465-9235
NSN 6150-01-422-0421
NSN 6105-00-353-8153
NSN 6105-01-600-7860
NSN 2925-01-179-7795
NSN 5950-01-076-2798
NSN 5855-00-327-2112
NSN 6145-01-634-0388
NSN 5965-01-007-1963
NSN 5960-01-614-8005
NSN 7035-01-623-7195
NSN 5998-00-926-3730