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 6610-00-854-5044
NSN 6240-01-449-1387
NSN 5945-01-233-9865
NSN 5915-00-111-1905
NSN 6130-01-436-5096
NSN 5945-01-553-1179
NSN 5835-01-564-5575
NSN 6150-01-265-3859
NSN 4140-00-912-0794
NSN 6620-01-529-7513
NSN 5905-01-555-6495
NSN 6105-01-363-9225