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 5935-01-060-5427
NSN 5855-00-688-9954
NSN 6320-00-331-7138
NSN 6645-01-153-7666
NSN 7035-00-235-3529
NSN 5945-01-596-5187
NSN 6645-01-320-0251
NSN 7035-01-157-0028
NSN 5905-01-225-4185
NSN 6685-00-245-8418
NSN 5910-00-115-2388
NSN 6110-01-622-7352