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 6240-00-137-2498
NSN 5835-00-617-3578
NSN 6685-00-935-6961
NSN 5935-01-466-8554
NSN 5910-00-929-8973
NSN 5895-00-247-5490
NSN 5925-01-368-3723
NSN 5835-01-416-6455
NSN 5910-01-073-8072
NSN 5930-01-634-0659
NSN 5998-01-391-9073
NSN 4140-00-516-5002