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 5920-01-647-4118
NSN 6645-01-076-4655
NSN 5935-01-389-2423
NSN 6220-00-999-1911
NSN 5960-01-515-4791
NSN 5910-01-215-1550
NSN 5965-01-238-9287
NSN 5920-01-266-4598
NSN 6220-00-168-5756
NSN 6610-00-854-4980
NSN 5985-00-161-5124
NSN 5895-01-475-2086