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 4140-01-469-2266
NSN 6135-01-100-3593
NSN 6150-01-487-3026
NSN 6145-00-190-6988
NSN 6320-01-411-6610
NSN 6685-01-516-2578
NSN 5915-01-327-6637
NSN 5985-01-433-5751
NSN 5835-01-286-6499
NSN 6650-01-497-1773
NSN 6130-01-573-6521
NSN 6620-00-912-9623