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 5960-01-310-0676
NSN 6150-01-564-1618
NSN 5935-00-226-8416
NSN 5999-00-584-4577
NSN 5915-01-561-3546
NSN 6320-00-224-1852
NSN 2925-00-585-4572
NSN 6620-01-568-9203
NSN 5905-00-290-8098
NSN 5950-01-013-4181
NSN 5945-00-874-3474
NSN 5996-01-123-7977