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 5835-01-069-2359
NSN 5950-00-754-8544
NSN 5945-01-588-1327
NSN 5905-00-173-6955
NSN 5935-00-138-8711
NSN 5999-00-136-5874
NSN 5910-00-237-5250
NSN 5925-00-934-3365
NSN 6320-00-593-0379
NSN 5985-00-341-6350
NSN 6610-00-008-6470
NSN 6150-01-470-0210