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 5935-01-359-1999
NSN 5945-00-113-0472
NSN 6145-01-472-9227
NSN 2925-00-620-7757
NSN 6685-00-099-9025
NSN 5905-01-319-4519
NSN 6220-01-396-2613
NSN 6135-01-106-7740
NSN 6220-00-288-4350
NSN 6650-01-116-7784
NSN 6610-01-419-0352
NSN 5950-01-624-8591