Chemlink M1 CR Clean Room White 10.1oz 16 Pack F1224

M-1 CR (Clean Room) is a thermosetting, moisture cure clean room sealant which does not contain solvent or isocyanates. M-1 CR has been tested for airborne molecular contamination and is approved for semiconductor clean room use. Fully cured M-1 Clean Room Sealant releases virtually no molecular air contamination at room temperature.

VOC compliant - less than 15 grams per liter
Solvent free - 100% solids, will not shrink
Specified for biomedical, electronics, and aerospace clean rooms where contamination cannot be tolerated

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SKU: 17343

ChemLink M-1 Cleanroom is a high-performance, solvent-free sealant and adhesive specifically formulated for environments where strict control over air quality and surface emissions is required. Designed for cleanrooms and other sensitive workspaces, M-1 CR releases virtually no airborne molecular contaminants and complies with the most stringent low-VOC standards, including CARB, BAAQMD, and SCAQMD. Its 100% solids, moisture-curing polyether chemistry contains no solvents, no isocyanates, and no hazardous air pollutants — making it an ideal choice for use in medical research labs, semiconductor manufacturing facilities, pharmaceutical plants, and aerospace assembly areas.

Unlike traditional polyurethane sealants, which can emit gases during curing or degrade under UV exposure, M-1 CR offers superior stability. It does not shrink, crack, or discolor over time, even in challenging conditions. The product adheres aggressively to concrete, metals, plastics, glass, and other construction materials, with no primer required for most applications. M-1 CR also performs well in low-temperature and damp environments, maintaining flexibility and seal integrity where other products might fail. The combination of fast cure time, clean handling, and resilient performance makes it a trusted solution for professionals maintaining contamination-sensitive environments.

We also carry the standard ChemLink M1 sealant!

Key Features

Ultra-Low VOC

Less than 15 g/L, compliant with CARB, SCAQMD, BAAQMD, and other environmental regulations.

Non-Outgassing

Safe for cleanrooms — no isocyanates or solvents, virtually no molecular air contamination.

Adheres to Most Materials

Bonds securely to concrete, metal, glass, masonry, and more without the need for primers.

Fast Curing

Tack-free in approximately 20 minutes; paintable within 24 hours.

Flexible in Extreme Conditions

Remains stable from -40°F to 200°F; applicable as low as 32°F.

Multiple Packaging Options

Available in cartridges, sausages, pails, and drums to suit job size and application method.

Recommended Applications

ChemLink M-1 Cleanroom is recommended for a wide range of critical applications where cleanliness, air purity, and material compatibility are essential. It is commonly used to seal joints and transitions in cleanrooms, laboratories, and other controlled environments where airborne contaminants must be minimized. M-1CR is also effective for perimeter sealing around doors, access panels, and window systems, maintaining environmental integrity and preventing particulate intrusion.

Its strong bonding performance and low-emission profile make it ideal for use in electronic and medical device manufacturing, where adhesives must meet rigorous outgassing standards. In aerospace production facilities, M-1CR is used for precision bonding and sealing along assembly lines. It also serves as a reliable gasket replacement in HVAC systems and filtration units where non-food contact compliance is required. Additionally, it provides long-lasting seals in data centers and ISO-certified clean zones, ensuring performance without compromising indoor air quality.

Frequently Asked Questions

What makes M-1 Cleanroom different from standard sealants?

M-1 CR is designed for use in environments where outgassing and solvent emissions are not acceptable. It contains no isocyanates, emits virtually no VOCs, and will not shrink or discolor after curing.

Is it safe for cleanroom use?

Yes. M-1CR is tested for outgassed VOCs and is certified safe for cleanroom use in biomedical, electronics, and aerospace industries.

Can it be applied to damp surfaces?

Yes. Unlike many urethane products, M-1CR will not outgas or fail when used on damp or green concrete surfaces.

Does it require a primer for adhesion?

Typically, no primer is needed. It bonds well to most construction materials, though testing is recommended for specialty substrates.

What is the working temperature range for application?

It can be applied in temperatures as low as 32°F and as high as 100°F. After curing, it performs in service temperatures from -40°F to 200°F.

How is M-1 Cleanroom packaged?

It is available in 10.1 oz cartridges, 20 oz sausages (by special order), and 5-gallon pails or 50-gallon drums for larger applications.

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