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 5935-00-813-7536
NSN 5950-00-410-7235
NSN 6610-01-278-9387
NSN 6220-01-058-6369
NSN 6620-00-518-3595
NSN 6620-01-034-1697
NSN 5975-00-099-9312
NSN 5965-00-463-3929
NSN 5996-01-514-1610
NSN 6685-00-008-6268
NSN 5895-01-634-0630
NSN 5895-01-465-5830