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 5925-00-901-7937
NSN 4140-01-417-7552
NSN 5855-00-791-3423
NSN 5895-01-097-0629
NSN 5985-00-387-5974
NSN 6220-01-327-4054
NSN 6130-01-016-6161
NSN 6105-01-528-8027
NSN 6135-00-935-8769
NSN 5915-01-259-5705
NSN 6645-01-128-6932
NSN 2925-01-462-1620