Sherwin-Williams Macropoxy M330 (formerly known as Epigrip M330) is a 2-pack epoxy sealercoat for use over zinc silicate and other types of zinc rich primers. It is also used as a blast primer for use over stainless steel.
Please note: This product is made to order subject to a minimum order quantity of 150L and an extended lead time of 14 working days
Sherwin-Williams Macropoxy M330 (formerly known as M330) is a 2-pack epoxy sealercoat for use over zinc silicate and other types of zinc rich primers. It is also used as a blast primer for use over stainless steel.
Recommended Primers & Topcoats
Zinc Clad J984 Zinc Rich Primer
Dox-Anode D5V2
Indefinitely overcoatable with epoxy systems provided the surfaces to be coated have been suitably cleaned. Where a high degree of gloss and colour retention is required, overcoat with Acrolon C137V2, Acrolon C237 within 7 days at a minimum dft of 50 microns or in the case of Accrolon C750V2 overcoat within 4 days. These overcoating times refer to achievement of optimum adhesion at 23°C and will vary with temperature.
For overcoating with alkyd systems consult Technical Team for advice.
Application Conditions & Overcoating
Epoxy paints should preferably be applied at temperatures in excess of 10oC. In conditions of high relative humidity, ie 80-85% good ventilation conditions are essential. Substrate temperature shall be at least 3oC above the dew point and always above 0°C.
At application temperatures below 10°C, drying and curing times will be significantly extended, and spraying characteristics may be impaired.
Application at ambient air temperatures below 5°C is not recommended.
In order to achieve optimum water and chemical resistance, temperature needs to be maintained above 10oC during curing.
If it is desired to overcoat outside the times stated on the data sheet, please seek advice from Technical Team.
Additional Notes
Drying times, curing times and pot life should be considered as a guide only.
The curing reaction of epoxies commences immediately the two components are mixed, and since the reaction is dependent on temperature, the curing time and pot life will be approximately halved by a 10°C increase in temperature and doubled by a 10°C decrease in temperature.
When M330 is used as a tie-coat or sealer coat over inorganic zinc silicate, the zinc silicate must be left for a minimum of 16 hours at 15°C and then checked for cure. Prior to overcoating, the inorganic zinc silicate primer must be fully cured.
Care must be taken to ensure that Macropoxy M330 is not over-applied on to the zinc silicate otherwise there is a possibility of pinholing occurring.
Epoxy Coatings - Tropical Use
Epoxy paints at the time of mixing should not exceed a temperature of 35°C. At this temperature the pot life will be approximately halved. Use of these products outside of the pot life may result in inferior adhesion properties even if the materials appear fit for application. Thinning the mixed product will not alleviate this problem.
The maximum air and substrate temperature for application is 50°C providing conditions allow satisfactory application and film formation. If the air and substrate temperatures exceed 50°C and epoxy coatings are applied under these conditions, paint film defects such as dry spray, bubbling and pinholing etc. can occur within the coating.
Numerical values quoted for physical data may vary slightly from batch to batch.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Sherwin-Williams Macropoxy M330 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
These surface preparation kits for steel have been created to help provide customers with an easily accessible bundle of tools to aid in the preparation of steel surfaces in accordance with ISO 8501-1 (St2/3) and SSPC (SP 2/3).
Please click here for important information about these kits.
Kit Contents:
SET 1 (Hand Tools)
1 x Rust-Oleum...
