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 6145-00-493-4089
NSN 5935-00-738-5568
NSN 5996-01-458-6641
NSN 5965-01-348-2493
NSN 5996-01-440-9660
NSN 5935-01-361-0516
NSN 5915-00-967-1725
NSN 5895-00-679-8606
NSN 5905-00-211-1061
NSN 6650-01-571-7122
NSN 6685-01-507-5310
NSN 5975-01-271-6143