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 6650-01-101-6622
NSN 5945-01-528-4749
NSN 6685-01-136-3479
NSN 5835-01-123-8305
NSN 2925-00-749-8893
NSN 6620-01-266-8894
NSN 5999-01-043-0790
NSN 5996-01-283-3409
NSN 6110-00-433-3070
NSN 6650-00-629-8027
NSN 6620-01-378-9193
NSN 5999-00-986-4243