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 6240-00-433-7706
NSN 5855-01-218-3735
NSN 6645-01-605-1485
NSN 6240-01-371-3020
NSN 5945-00-499-2008
NSN 5925-01-537-8655
NSN 5945-01-137-1512
NSN 5930-00-179-3565
NSN 5998-00-291-0687
NSN 5835-01-052-8464
NSN 6110-01-133-8343
NSN 6685-01-437-6426