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 6220-01-506-3743
NSN 4140-00-103-0065
NSN 6105-00-254-7747
NSN 6130-01-079-3712
NSN 6685-01-310-5587
NSN 6130-01-360-5637
NSN 5975-00-842-1944
NSN 5960-01-379-3947
NSN 6650-00-440-3537
NSN 5835-01-359-2575
NSN 6110-01-281-3342
NSN 5999-01-361-8443