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 2925-00-196-9003
NSN 5996-01-521-2458
NSN 6685-01-078-1759
NSN 5965-00-168-9624
NSN 6650-00-665-3658
NSN 6620-01-207-0667
NSN 6105-01-129-2908
NSN 6620-01-085-8688
NSN 6610-01-144-4228
NSN 5945-01-646-0032
NSN 6320-01-243-2276
NSN 6145-01-378-3110