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SafetyCrete Dairy Shed Repair Mortar

Chemical and Abrasion Resistant Putty
500 ml Kit

4.167 GEMCOAT CR 1:1 HV
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Chemical and Abrasion Resistant Putty, 500 ml Kit

GEMCOAT CR 1:1 HV is a chemical & abrasion resistant putty. It is formulated as a chemical & abrasion resistant lining for pumps, and can be machined before full cure. It can be used in many other applications where chemical & abrasion resistance are required such as patching tanks. It is formulated to have resistance to most concentrated acids & alkalais, and many other commonly used chemicals – consult with Gem Co Ltd for suitability for use.

Download 4.167 GEMCOAT CR 1:1 HV Product Sheet

Physical properties

  • Appearance: Base - pigmented paste; Hardener - pigmented paste
  • Odour: low odour
  • Solids: 100 %
  • Coating Type: Epoxy
  • Packaging: 1kg & 2kg two part pack
  • Mix ratio: 1 part base :1 part hardener
  • Pot Life: 1/2 hour approximately at 20 degrees Celsius (100g mix)
  • Coverage: 0.75 sq metres/kg @ 0.5 mm ; 0.13 sq m/kg @ 5 mm DFT.
  • Dry hard 4 hours to tack free @ 25 C ; minimum of 48 hours @ 25 ° C before full service OR force cure for 16 hours @ 50° C.

Surface Preparation

  • Steel : Blast with a suitable abrasive to near white metal (SSPC 10/SA 2.5 standard).
  • If this is not possible remove loose material by mechanical cleaning (grinding or similar).
  • Clean surface with solvent based cleaner.
  • All surfaces must be free of dust or other contaminants before applying GEMCOAT CR 1:1 HV.

Method of Application

  • Add 1 part hardener to 1 part base (by volume)
  • Thoroughly mix with a drill & mixing blade or mix thoroughly for 2 minutes with a square bladed putty knife – good mixing is important to get good performance.
  • GEMCOAT CR 1:1 HV is applied by putty knife or similar.
  • Allow to cure 24 hours then if possible then force cure for 16 hours @ 50° C.
  • Allow 7 days cure before putting into service.

Handling Precautions

  • Avoid contact with eyes and skin.
  • Do not ingest.
  • Use with adequate ventilation.
  • Protective clothing ,eye protection, and gloves should be worn.
  • Do not breathe vapour or spray.
  • Keep away from children.


The information provided is accurate to the best of our knowledge. We can not however anticipate all conditions under which this information and our products may be used. We therefore accept no responsibility for results obtained by the application of our products, or  for their safe use  and suitability. GemCo Limited sells these products without warranty and buyers  and users assume  all  responsibility and liability for loss or damage arising from the handling  and use of our products.