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 5965-01-437-9721
NSN 6650-00-717-4464
NSN 6685-00-704-2046
NSN 5935-01-183-8575
NSN 5945-01-289-0940
NSN 5895-00-868-2651
NSN 6240-00-196-4518
NSN 5910-00-432-9144
NSN 5950-01-090-0895
NSN 5965-01-130-8262
NSN 5985-01-025-6051
NSN 6320-00-646-3311