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 5920-01-474-6192
NSN 6650-01-433-3520
NSN 5950-00-466-2041
NSN 5930-00-819-0456
NSN 6610-00-935-7131
NSN 6110-01-441-4091
NSN 5905-01-328-9003
NSN 5996-00-467-1429
NSN 5855-01-188-4049
NSN 5915-01-599-8846
NSN 5960-01-239-4314
NSN 6650-00-300-9895