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 6610-01-254-4196
NSN 6650-01-206-0037
NSN 5965-00-995-2075
NSN 5925-01-443-5015
NSN 2925-00-167-6762
NSN 5965-00-100-1291
NSN 2925-00-098-4131
NSN 6220-01-398-0614
NSN 6130-01-502-9718
NSN 5960-01-598-9072
NSN 5920-00-723-4554
NSN 6150-01-426-2644