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 5985-01-441-9500
NSN 5910-01-067-8038
NSN 6610-01-444-4851
NSN 5945-01-137-1512
NSN 5895-01-206-1330
NSN 5950-00-177-6303
NSN 6130-01-655-3201
NSN 5835-01-343-7516
NSN 5999-01-646-1858
NSN 5950-00-105-6639
NSN 6610-01-048-9022
NSN 4140-01-406-0541