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Permatex 27037 Optimum Black Gasket Maker is a professional-grade, sensor-safe sealant designed for premium automotive components. It offers 15% greater strength and 60% more flexibility than Ultra Black, withstanding extreme temperatures from -65°F to 500°F. Ideal for valve covers, oil pans, and more, it ensures maximum oil resistance and vibration durability, making it the go-to choice for millennial managers who demand reliability and precision in vehicle maintenance.
| ASIN | B072MRCG8W |
| Best Sellers Rank | 29,252 in Automotive ( See Top 100 in Automotive ) 254 in Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Colour | Optimum Black |
| Compatible Material | Rubber |
| Country Of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 655 Reviews |
| Global Trade Identification Number | 00686226270375 |
| Included Components | Gasket Maker |
| Item Dimensions | 32 x 97 x 203 millimetres |
| Item Form | Paste |
| Item Type Name | Optimum Black Gasket Maker 3.35 oz |
| Item Weight | 0.11 Kilograms |
| Item dimensions L x W x H | 32 x 97 x 203 millimetres |
| Item weight | 0.11 Kilograms |
| Manufacturer | Permatex |
| Manufacturer Part Number | 27037 |
| Material | Silicone |
| Model Number | 27037 |
| Number of Items | 1 |
| Style | Optimum |
| Style Name | Optimum |
| UPC | 686226270375 |
| Unit Count | 1.0 count |
| Water Resistance Level | Water Resistant |
| Water resistance level | Water Resistant |
G**S
Excellent Product
Excellent and supreme quality product for sealant.
L**E
Excellent
Excellent Used to install a crankcase/crankshaft oil seal on a Lycoming engine
A**R
Great stuff
Great stuff, works exactly as advertised. Easy to use, good seal.
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.
I**7
Highly recommend gasket maker
I brought this gasket maker when I was changing my CRV engine gasket. Very easy apply, dry very quick and adhesion very well. So far I don't see any issues and durability is good. It's very easy use making gasket and comes with everything you need. Good price for quality products.
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.
R**R
Gasket maker
Works motorcycle has new gasket and the sealer helped
Trustpilot
3 days ago
1 day ago