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 5999-00-407-4476
NSN 4140-01-004-0566
NSN 5925-00-414-1433
NSN 5996-01-618-4515
NSN 5965-01-187-8574
NSN 6610-00-960-9135
NSN 5985-00-215-7922
NSN 5935-01-570-4204
NSN 5945-01-227-9362
NSN 5975-00-374-5245
NSN 5930-00-774-9604
NSN 5910-01-146-4784