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 5998-01-315-2953
NSN 6150-01-369-6854
NSN 5990-00-920-2894
NSN 6685-01-512-4386
NSN 5990-01-412-9020
NSN 5999-00-269-5320
NSN 6105-00-097-8131
NSN 6650-00-731-8388
NSN 6135-00-161-0746
NSN 5835-01-387-4227
NSN 5910-00-299-7265
NSN 5950-00-553-7964