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 5998-00-738-5106
NSN 5965-01-451-2481
NSN 5835-01-307-8954
NSN 6685-01-539-7247
NSN 6610-00-832-3137
NSN 5996-01-364-1074
NSN 6135-01-222-0703
NSN 5930-01-167-1826
NSN 6650-00-829-4122
NSN 4140-00-011-9444
NSN 5920-00-846-6632
NSN 6220-00-929-5257