🛠️ Prep Like a Pro, Weld Like a Boss!
The SEM 39783 Weld-Thru Primer is a 13 oz. aerosol automotive primer designed for metal surfaces. Featuring a fast 20-minute full cure time and zinc-enriched formula, it offers superior corrosion resistance and water repellency. With coverage up to 240 sq.ft. for two coats and a matte gray finish, it ensures efficient, professional-grade preparation for welding and painting projects.
| Brand | SEM |
| Color | Gray |
| Finish Type | Matte |
| Size | 13 Ounce (Pack of 1) |
| Item Volume | 13 Milliliters |
| Unit Count | 13.0 Ounce |
| Paint Type | automotive-paint-primer |
| Surface Recommendation | Metal |
| Indoor/Outdoor Usage | Outdoor |
| Item Form | Aerosol |
| Age Range (Description) | Adult |
| Is Waterproof | False |
| Model Name | 39783 |
| Package Information | Can |
| Color Code | #808080 |
| Full Cure Time | 20 Minutes |
| Coverage | 192-240 sq. ft. for two coats |
| Water Resistance Level | Water Repellent |
| UPC | 646786397837 |
| Global Trade Identification Number | 00646786397837 |
| Manufacturer | SEM |
| Dry Time In Hours | 0.33 |
| Item Weight | 15.2 ounces |
| Product Dimensions | 8 x 4 x 4 inches |
| Item model number | 39783 |
| Is Discontinued By Manufacturer | No |
| Exterior | Zinc Enriched |
| Manufacturer Part Number | 39783 |
N**V
Best weld thru primer ever.
Used before excellent product.
R**B
Good fan pattern on spray nozzle
Good fan spray from nozzle. Goes on like high build primmer
P**G
Good but sprays to fast
The formula seems to have changed on this. Sprays almost to fast. Maybe it was a tip change
N**Y
Primer
Product worked well on project car. Sealed raw metal and was able to well without grinding it of first.A+
D**.
Get 3m
Waste of money. I know it's been a while since I purchased it, but the project was stalled. Stored in a dry area at room temperature the whole time. One can would not spray the material at all just the propellant , and the other can would not mix no matter how long I shook the ball around the can. If I hadn't waited so long to use it I'd be demanding my money back, and now wish I wouldve at least sprayed it when it arrived!!
J**T
Good Stuff
Works well.
S**D
Everyone knows it’s good
Just another buyer that likes this product.
N**E
nozzle clogs, can didn't even last for a single use, but only a half use. waste of money.
spray cap clogged almost immediately. I tried immediately turning the can upside down to clear it out, and there wasn't enough propellant to clear it out. 98% of the can was left basically worthless. I'd buy the competing product from Eastwood as it doesn't clog as easily, and costs less.
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