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 5950-00-935-2428
NSN 5945-01-250-9981
NSN 5975-01-346-6626
NSN 5835-01-042-2247
NSN 6645-00-004-8628
NSN 6650-00-010-8037
NSN 5960-00-056-2633
NSN 6220-00-189-6561
NSN 5975-00-917-7562
NSN 5998-00-689-9749
NSN 6130-00-792-4612
NSN 5855-01-351-2541