NGP 5005 Graphite Spacer Bushings NGP 5005 graphite spacer bushings are utilized to take up space previously occupied by excessive packing rings. NGP 5005 bushings are machined at NGP from fine grained, high purity electro-graphite. 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