NGP Style 6350 Graphite Lubrication NGP Style 6350 graphite lubrication is designed for packing lubrication. NGP 6350 leaves no build up and does not contain nickel or copper which has been proven to cause packing wear. Nuclear Graphite Products (NGP) Main Page NGP 524 Graphitic Yarn Page NGP 6300J Flexible Graphite Seal Rings Page NGP Belleville Spring Washers Page NGP 193 B-7 Gland Studs Page NGP Style 6350 Graphite Lubrication Page NGP 6000 Composite End Rings Page NGP 5005 Graphite Spacer Bushings Page