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 5965-01-551-9557
NSN 5920-00-180-0223
NSN 5905-00-402-0289
NSN 5950-01-266-6673
NSN 5945-00-229-0243
NSN 2925-01-446-6976
NSN 5945-00-949-7979
NSN 5960-01-595-6515
NSN 6220-01-410-8592
NSN 5965-00-735-9315
NSN 5905-01-199-8890
NSN 5998-01-338-0994