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 5945-01-243-6377
NSN 5960-01-553-4557
NSN 6240-00-646-6931
NSN 6105-01-472-7136
NSN 5950-01-458-0747
NSN 5999-01-498-4843
NSN 6145-01-216-5997
NSN 5965-00-840-3791
NSN 6610-01-476-7412
NSN 5915-01-361-8860
NSN 5960-00-430-3781
NSN 6645-01-143-0137