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 5990-01-116-2181
NSN 5855-01-096-9294
NSN 5930-01-526-2102
NSN 5950-01-138-1954
NSN 6110-01-386-6720
NSN 6645-00-926-4394
NSN 5930-01-570-1785
NSN 6135-01-230-4399
NSN 5960-01-649-1341
NSN 6135-00-763-5793
NSN 6145-01-047-9537
NSN 6150-01-377-4037