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 6610-00-598-5268
NSN 5965-01-620-5320
NSN 5855-00-004-0904
NSN 5930-00-815-7445
NSN 5935-00-811-4556
NSN 5945-01-260-6469
NSN 5999-01-545-3135
NSN 5905-00-333-3172
NSN 5965-01-172-2488
NSN 6130-01-476-7802
NSN 5895-01-449-1839
NSN 6135-01-485-9082