Zerust®/Excor® ActivPak® offers powerful and fast-acting corrosion protection for challenging applications such as overseas shipping and in polluted factories. Its robust formula protects against acid gases and contaminants. Use to protect metals during operation, storage and in aggressive manufacturing and shipping environments.

Zerust ActivPak packets offers a new technology of Vapor Corrosion Inhibitor (VCI) combined with a volatile Flash Corrosion Inhibitor (FCI™) to protect ferrous and aluminum metals in enclosed spaces. This combination goes to work in minutes to protect against both flash rust and long-term corrosion with its progressive VCI chemistry. Do not place in direct contact with copper, brass or zinc or use more than recommended. Test before use.

ActivPak provides corrosion control when there are concerns about manufacturing processes and fluids leaving corrosive residues. The packets reduce flash rust and corrosion incidents, even on contaminated parts and in challenging environments. ActivPak inhibitors form an invisible shield that provides powerful corrosion protection that does not leave a residue and does not need to be removed prior to welding or painting.


Fast acting flash corrosion protection

Convenient drop-in packets

Does not cause hydrogen embrittlement

Protects against acid gases, salt air and other challenging contaminants

Protection lasts up to 2 years

Application Type

During Operation
May be used with Zerust packaging


Zerust ActivPak-35 are in stock for immediate delivery, sold in cases.
Additional sizes T-330, T-33 and T-350 available upon request.

ActivPak – 35
375-M-00100 (10/case)
375-M-00101 (50/case)
375-M-00102 (100/case)

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Zerust Product Name Normal Environment** Aggressive Environment**
Volume of Protection Duration of Protection
(Up To)
Volume of Protection Duration of Protection
(Up To)
ActivPak(LS)-25 0.25 ft³ (0.0071 m³) 6 months 0.025 ft³ (0.0007 m³) 15 days
ActivCapsule FAC1-1s 4 ft³ (0.12 m³) 1 year 0.35 ft³ (0.01 m³) 1 month
ActivPak(LS)-T330 5 ft³ (0.15 m³) 1 year 2 ft³ (0.05 m³) 2 months
ActivPak(LS)-33 16 ft³ (0.45 m³) 1 year 5 ft³ (0.15 m³) 2 months
ActivPak(LS)-T350 26 ft³ (0.75 m³) 1 year 7 ft³ (0.2 m³) 2 months
ActivPak(LS)-35 35 ft³ (1 m³) 1 year 11 ft3 (0.3 m3) 2 months
ActivPak-T330 5 ft³ (0.15 m³) 2 years 2 ft3 (0.05 m3 ) 4 months
ActivPak-33 16 ft³ (0.45 m³) 2 years 5 ft³ (0.15 m³) 4 months
ActivPak-T350 26 ft³ (0.75 m³) 2 years 7 ft³ (0.2 m³) 4 months
ActivPak-35 35 ft³ (1 m³) 2 years 11 ft³ (0.3 m³) 4 months

* Protection ratings are based on the highest average tested protection properties and are not guaranteed. Results may vary according to usage environment and metal surface properties such as contaminants.

** Normal environment (below 0.2 ppm SO2) defined as warehouses, light industrial areas, and shipping and storage in sealed packaging or enclosures. Aggressive environment (at or above 0.2 ppm SO2) defined as areas located in the vicinity of salts and acid gases such as oceans, petrochemical sites, wastewater treatment and pulp-paper plants or in enclosures that are not well sealed.