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 5996-00-114-1799
NSN 5835-00-247-0161
NSN 6130-01-041-1202
NSN 6105-01-145-1504
NSN 5950-00-109-2000
NSN 5910-01-653-8482
NSN 6150-01-440-7257
NSN 5905-01-038-2844
NSN 5855-01-598-7392
NSN 5998-00-923-7266
NSN 5998-01-536-3346
NSN 5965-00-486-7907