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 5915-01-272-2477
NSN 6145-00-205-4046
NSN 5999-01-485-0316
NSN 5935-00-186-2792
NSN 5950-01-591-8151
NSN 7035-01-369-1445
NSN 7035-01-426-4133
NSN 5895-01-120-7958
NSN 5910-00-205-2430
NSN 6620-00-586-6460
NSN 5990-01-591-8797
NSN 6110-00-602-1371