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 6685-00-582-1215
NSN 4140-01-305-2112
NSN 5985-00-156-6651
NSN 5925-01-505-8633
NSN 5975-00-911-3547
NSN 6105-01-047-5951
NSN 5975-01-469-7981
NSN 5930-00-837-1590
NSN 5996-01-547-7386
NSN 6320-01-278-9832
NSN 6685-00-036-7120
NSN 6220-01-337-7165