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 5935-01-217-7035
NSN 5996-00-010-5209
NSN 5925-01-442-8589
NSN 6620-00-511-3355
NSN 6145-01-220-9149
NSN 6650-00-804-2039
NSN 2925-01-101-4655
NSN 4140-00-406-4369
NSN 6110-01-357-2011
NSN 5895-01-162-3679
NSN 5905-01-129-8091
NSN 6150-01-547-2486