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 5910-01-221-3967
NSN 5855-01-312-5160
NSN 6135-00-891-4944
NSN 5960-01-614-8005
NSN 5925-00-116-4888
NSN 6130-00-081-9879
NSN 6620-00-769-7303
NSN 4140-01-371-4525
NSN 6135-00-539-8088
NSN 5996-00-499-3691
NSN 6130-00-974-7687
NSN 5895-00-028-9579