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 6145-00-067-7436
NSN 5960-01-406-4136
NSN 5925-00-595-9394
NSN 6105-00-105-4273
NSN 5835-00-816-0394
NSN 5950-00-483-2139
NSN 5999-00-181-6101
NSN 6645-01-056-5291
NSN 5915-01-629-4204
NSN 5935-00-468-5898
NSN 5965-00-052-9184
NSN 5998-01-399-6245