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)