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 4140-01-251-0079
NSN 6240-01-605-8096
NSN 5945-01-086-0437
NSN 5990-01-311-4762
NSN 5920-01-349-0012
NSN 5975-00-655-0761
NSN 5905-01-095-0682
NSN 5985-00-717-3806
NSN 5925-00-015-2806
NSN 5999-01-077-0690
NSN 6130-01-437-9184
NSN 5895-01-152-0943