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 5945-00-141-0160
NSN 5999-01-535-1468
NSN 2925-01-184-5201
NSN 6135-01-187-0033
NSN 5835-01-068-3417
NSN 6130-00-281-5062
NSN 6240-01-487-4386
NSN 5990-01-544-0364
NSN 6650-01-046-7795
NSN 6620-01-583-2779
NSN 5945-01-552-1127
NSN 5835-01-106-1456