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 5935-00-316-3530
NSN 5985-01-508-5059
NSN 6645-00-704-3630
NSN 6130-01-096-6692
NSN 6610-00-594-6372
NSN 6620-01-550-2805
NSN 5905-01-556-2454
NSN 6320-00-149-7570
NSN 5945-00-204-0041
NSN 6135-00-628-1142
NSN 6645-00-079-1430
NSN 6105-01-185-4060