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 5855-01-201-4857
NSN 7035-01-520-7243
NSN 6110-00-442-7657
NSN 6150-01-458-2510
NSN 5950-00-988-8951
NSN 5935-00-143-1399
NSN 6650-01-311-9009
NSN 5905-00-125-3517
NSN 7035-01-508-6447
NSN 5895-01-041-5874
NSN 6135-01-400-2947
NSN 5960-00-026-3142