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TYPES OF SEALANT
ROCKHARD 985-111-800: Normally used on castings which allow .001 to .005 coating buildup, and which are going to be reprocessed through anodize or re-chromating.
PHYSICAL PROPERTIES
Color = Clear, extremely chemical resistant, very hard and erosion resistant. Resistant to humidity or Trichloroethylene. Holds up during anodizing and re-chromating. Provides protection to metals from attack by salt and other corrosive environments. When used in conjunction with Heavy film anodic coatings, it can yield up to 8000+ hours salt spray. (ASTM B117)
TYPICAL APPLICATIONS
Computer chassis
Engine blocks
Heat exchangers
Aircraft components, gearbox cases
Pumps, compressor housings
Frames, gearbox covers, turbine housings
SURFACE QUALITY
Texture of coating is smooth; poor intercoat adhesion. Normally used without any top coats, If top coating with paint or sealant, primer should be used
CURRENT APROVALS/SPECIFICATIONS
Westland Helicopter
McDonald Douglas HP4-133
Honeywell-AlliedSignal - FP5109
Rolls Royce/BMW MPS BRR52708
British Dept. of Defense DTD 5562
COATING THICKNESS
Normally dimensional increase is in the range of:
Machine surfaces = .0005 to .001 (0.5 to 1 .0 mil)
Cast surfaces = .0005 to .003 (0.5 to 3.0 mils)
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