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 6145-01-320-7963
NSN 5965-01-160-2691
NSN 5905-01-238-1968
NSN 6145-00-372-3713
NSN 5996-00-676-6361
NSN 5960-01-503-4123
NSN 5915-00-205-2615
NSN 6645-01-157-9080
NSN 6150-00-190-7874
NSN 6110-01-487-1336
NSN 4140-00-491-7699
NSN 5999-00-248-7240