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 6240-01-042-3650
NSN 5935-00-468-7447
NSN 6610-01-459-8192
NSN 6150-01-196-2067
NSN 6645-00-527-6531
NSN 5950-00-125-5525
NSN 6135-01-364-2738
NSN 5835-01-580-7543
NSN 6645-00-055-2170
NSN 5996-01-351-8868
NSN 5835-00-415-6421
NSN 6685-00-605-9738