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 6130-00-163-1905
NSN 6650-01-412-4217
NSN 6685-01-055-6057
NSN 5915-01-372-5381
NSN 6145-00-824-2517
NSN 5965-01-305-2858
NSN 5960-00-246-4623
NSN 5996-00-148-8474
NSN 6610-01-014-3964
NSN 5930-00-728-6603
NSN 5920-00-547-1051
NSN 6650-00-751-9958