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 6645-01-529-5690
NSN 6320-00-513-8376
NSN 6610-00-917-5656
NSN 6650-01-367-7593
NSN 5895-01-438-4775
NSN 6650-01-236-5916
NSN 5935-01-240-5738
NSN 5895-01-430-2555
NSN 5855-01-122-9418
NSN 6135-00-182-7008
NSN 6150-00-449-5179
NSN 6220-01-351-9046