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 5925-01-542-9068
NSN 6145-00-472-9413
NSN 5985-00-671-5933
NSN 6105-01-383-7486
NSN 5855-00-951-6483
NSN 4140-01-562-0499
NSN 5935-01-605-8607
NSN 5910-01-427-3819
NSN 6220-01-116-2411
NSN 5998-00-837-2664
NSN 6645-00-079-1430
NSN 4140-00-908-2363