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 5935-01-123-2083
NSN 6220-00-369-5422
NSN 6620-01-224-1617
NSN 6150-01-655-2619
NSN 6645-01-051-7447
NSN 5855-01-605-2438
NSN 5996-01-006-4262
NSN 5990-01-116-2181
NSN 6650-00-170-5095
NSN 6110-01-227-3869
NSN 6620-01-558-6558
NSN 4140-00-795-3747