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 5835-01-245-8077
NSN 6145-01-423-8625
NSN 5925-01-129-4135
NSN 5999-00-127-8125
NSN 5915-00-060-9139
NSN 6620-01-444-4048
NSN 5985-01-442-7850
NSN 5998-01-123-9579
NSN 5990-01-407-6615
NSN 5996-00-196-7258
NSN 5915-01-304-2087
NSN 6650-01-165-2175