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 6320-01-387-3230
NSN 5905-01-660-9976
NSN 5895-00-722-1084
NSN 5935-00-366-5789
NSN 5930-01-501-6211
NSN 5910-01-143-5324
NSN 5999-00-473-1099
NSN 5895-01-376-7873
NSN 5998-01-180-9493
NSN 5915-01-162-4064
NSN 5996-00-862-5514
NSN 5950-01-555-6908