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 6685-01-157-5541
NSN 6610-01-100-3662
NSN 5945-00-513-9716
NSN 7035-00-631-3782
NSN 6130-01-339-9873
NSN 6240-00-353-5753
NSN 5950-01-577-0001
NSN 5950-01-161-3045
NSN 5905-00-700-3405
NSN 5855-01-406-7237
NSN 6110-01-357-3723
NSN 5855-00-962-5792