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 6145-01-152-2417
NSN 6135-01-613-1464
NSN 6145-01-627-8845
NSN 5910-00-043-0010
NSN 5945-00-934-0286
NSN 5975-01-151-9790
NSN 5945-00-581-4943
NSN 5965-01-553-6689
NSN 6620-00-155-2608
NSN 5945-00-246-3307
NSN 5996-00-906-4828
NSN 6150-00-389-6771