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 5925-01-280-2556
NSN 6685-01-353-4015
NSN 6685-00-950-8176
NSN 6150-00-201-9583
NSN 4140-00-162-6583
NSN 5835-01-495-0595
NSN 6610-01-127-0724
NSN 6150-00-759-3935
NSN 5910-01-245-8757
NSN 5990-00-791-4064
NSN 6105-00-813-9224
NSN 6685-01-294-2567