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 5905-01-601-6653
NSN 5950-00-170-3487
NSN 5960-01-614-8005
NSN 6685-01-169-7741
NSN 5910-00-149-2016
NSN 5996-01-538-3703
NSN 6650-01-217-0303
NSN 6130-00-487-4384
NSN 5996-01-224-5515
NSN 5990-01-166-2237
NSN 5855-01-539-4296
NSN 5990-00-983-1813