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 6645-00-720-3953
NSN 6220-01-406-2051
NSN 6650-01-142-1688
NSN 6620-01-177-5567
NSN 5996-01-496-0462
NSN 5950-00-288-5994
NSN 5996-01-248-2305
NSN 6150-00-288-6245
NSN 5945-00-218-0012
NSN 6145-00-185-9962
NSN 5925-00-261-8166
NSN 6110-00-891-9917