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 5998-01-063-4914
NSN 5935-01-261-7877
NSN 5935-01-164-2495
NSN 5990-01-425-2175
NSN 6685-01-431-7927
NSN 6145-01-102-8550
NSN 5975-01-045-9683
NSN 5905-01-349-7164
NSN 5950-00-266-0631
NSN 5945-00-881-0233
NSN 6610-01-512-2025
NSN 5990-00-263-1289