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🖤 Seal like a pro with Permatex Optimum Black – where strength meets precision!
Permatex 27037 Optimum Black Gasket Maker is a premium silicone sealant designed for high-performance automotive applications. It offers 15% greater strength and 60% more flexibility than Ultra Black, withstanding extreme temperatures from -65°F to 500°F. Sensor-safe and low odor, it resists oil, vibration, and shop fluids, making it ideal for valve covers, oil pans, and other critical engine components.
| ASIN | B072MRCG8W |
| Best Sellers Rank | #32,862 in Automotive ( See Top 100 in Automotive ) #143 in Automotive Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Brand Name | Permatex |
| Color | Optimum Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.6 out of 5 stars 1,676 Reviews |
| Global Trade Identification Number | 00686226270375 |
| Included Components | Gasket Maker |
| Item Dimensions | 32 x 97 x 203 millimeters |
| Item Form | Paste |
| Item Type Name | Optimum Black Gasket Maker 3.35 oz |
| Item Weight | 3 Ounces |
| Item dimensions L x W x H | 32 x 97 x 203 millimeters |
| Item weight | 3 Ounces |
| Manufacturer | Permatex |
| Material | Silicone |
| Material Type | Silicone |
| Model | 27037 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 27037 |
| Style | Pack of 1 |
| Style Name | Pack of 1 |
| Surface Recommendation | Miscellaneous |
| UPC | 686226270375 |
| Unit Count | 1 Count |
| Water Resistance Level | Water Resistant |
| Water resistance level | Water Resistant |
G**S
Excellent Product
Excellent and supreme quality product for sealant.
A**R
Great stuff
Great stuff, works exactly as advertised. Easy to use, good seal.
L**E
Excellent
Excellent Used to install a crankcase/crankshaft oil seal on a Lycoming engine
R**T
Excellent sealer with real grip
I can't say this stuff is easy to remove once applied as the only time I had to remove a piece I had used the product on it put up a heck of a fight coming off. That proved that it had created a tight seal which is what I wanted. Vibration wasn't going to lossen it that's for sure. Application can be messy if you get in a hurry but its ability to create a tight seal with a firm holding power would be hard to duplicate this side of a weld.
A**4
Good gasket maker, but watch the cure time
I have used Permatex products for years. I tried the Optimum Black because it's supposed to have the highest oil resistance. The product works well. The only issue is that you have to be careful of the cure times. At lower temperatures this sealant will take more than 24 hours to cure. I used it on a valve cover in a garage that was 45 degrees and it took several days to fully cure.
Trustpilot
2 months ago
2 weeks ago