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 6620-01-250-1692
NSN 6685-01-501-5362
NSN 4140-01-254-3689
NSN 6320-01-389-8128
NSN 5920-01-222-5107
NSN 5835-01-331-5735
NSN 6320-01-046-5228
NSN 5835-00-165-3069
NSN 5835-00-864-4481
NSN 6320-00-468-8421
NSN 5935-01-472-2193
NSN 5999-01-266-8814