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 6650-01-519-0399
NSN 6240-01-073-4487
NSN 4140-00-911-1485
NSN 5895-01-406-3053
NSN 5945-00-334-4991
NSN 7035-01-413-6697
NSN 6645-01-523-8809
NSN 5990-01-493-4039
NSN 5950-00-938-0363
NSN 5999-01-160-8946
NSN 5990-00-689-5736
NSN 5855-01-351-6277