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 5950-00-189-1433
NSN 5996-01-510-6551
NSN 5950-01-331-7010
NSN 6110-01-466-0582
NSN 6220-01-449-2807
NSN 6610-00-787-1477
NSN 2925-00-922-3785
NSN 5985-01-519-9295
NSN 5990-01-446-5546
NSN 6220-00-284-3220
NSN 5920-01-391-1269
NSN 5950-01-471-8138