Description
Permabond 940 is a low odor, non-fogging, non-frosting cyanoacrylate built for production lines where operator comfort and part appearance both matter. Standard cyanoacrylates throw off fumes that fog nearby surfaces on hot, humid days, and that fogging shows up on finished parts and lowers acceptance rates. It cuts both problems by reducing the reactive vapor that causes them.
Where Permabond 940 Is Used
Assembly lines in aerospace, LED and electronics, sign and display, transportation, and general manufacturing use this cyanoacrylate wherever a fast, no-mix bond beats a two-part adhesive or a heat cure step. It handles clear acrylic and polycarbonate bonding without frosting the surface, which matters on display parts and light fixtures where the joint stays visible. No mixing and no heat cure also means less equipment and fewer process steps at the bench.
How Permabond 940 Performs
Viscosity runs 3 to 10 mPa.s at 25 degrees, thin enough to wick into close-fitting joints, with a maximum gap fill of 0.05 mm. Fixture time to reach handling strength ranges from 2 to 5 seconds on neoprene and NBR up to 30 to 40 seconds on zinc, so cycle time depends heavily on substrate choice. Stored refrigerated, the adhesive holds its performance for a full year, which matters for shops that buy in bulk but use it in smaller batches.
Specifications
| Property | Value |
|---|---|
| Chemistry | Alkoxyethyl cyanoacrylate |
| Appearance | Colorless liquid |
| Viscosity at 25C | 3-10 mPa.s |
| Specific gravity | 1.1 |
| Max gap fill | 0.05 mm |
| Shelf life, refrigerated | 1 year |
Permabond 940 is stocked in one ounce and one pound bottles for bench and line use. Browse the full cyanoacrylate adhesives line for related grades and viscosities, and see Permabond for complete substrate compatibility data.
Need Help?
Need help matching cure speed to your substrate or comparing this grade to a thicker cyanoacrylate? Call (800) 220-1966 or email [email protected].
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