Carbozinc 621

A two component moisture cured organic zinc primer for protection of steel in salt and weathering environments. Excellent maintenance or general use zinc primer over commercially blasted steel. Use as a shop primer where quick recoat and cure times are required, for field touch-up of inorganic zinc primers and for structural steel, tank exteriors, pipes and equipment in conjunction with corrosion resistant topcoats.

Product Type
Product Family
File Name Language Download
Carbozinc 621 PDS English
File Name Language Download
Carbozinc 621 (Special Zinc Filler) MSDS - Part B English
Carbozinc 621 MSDS - Part A English

Features & Benefits

  • Meets Class A slip co-efficient and creep testing criteria for use on faying surfaces
  • High level of zinc
  • Excellent adhesion and weathering
  • Excellent resistance to undercutting corrosion and abrasion resistant
  • Excellent application properties
  • May be topcoated in 4 hours at 75°F (24°C)
  • Tough durable film
  • Available in ASTM D520, Type II zinc version
  • VOC compliant to current AIM regulations