🛡️ Seal like a pro, stay leak-free, and never miss a beat!
Permatex 27037 Optimum Black Gasket Maker is a premium silicone sealant engineered for modern automotive assemblies requiring superior oil resistance and flexibility. It outperforms standard Ultra Black with 15% greater strength and 60% more flexibility, while safely operating across extreme temperatures (-65°F to 500°F). Sensor-safe and low odor, it’s perfect for valve covers, oil pans, and more, ensuring durable, leak-proof seals in critical engine components.
| ASIN | B072MRCG8W |
| Best Sellers Rank | #27,981 in Automotive ( See Top 100 in Automotive ) #135 in Automotive Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Brand Name | Permatex |
| Color | Optimum Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.6 out of 5 stars 1,769 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 |
S**N
Really good product
Really good product and easy to work with. It applies nicely, forms a good seal and does exactly what you'd expect from a gasket maker. The black finish is neat and it seems to be good quality compared to some of the cheaper alternatives I've used.
K**S
Good sealant. Used it before and it holds up very well.
I used this to plump up the sunroof gasket on my Jaguar XF's glass roof seal. It doesn't leak water, but wind noise has been annoying since day one... I finally ran a thin bead of this around the outside of the seal, where it meets with the roof and gently thinned it with my finger. No more wind noise, and the goo stays attached to the existing base gasket. Problem solved. I've used this on other things in the past as well, gas tank neck seal for hedge trimmer, anybody who's had to work on those tanks know how sloppy they are these days... little dab of this stuff, no more leaks! It doesn't stink, and it cleans up well as long as you're quick about cleaning up. I have no complaints, it does exactly what it needs to do!
A**R
Great stuff
Great stuff, works exactly as advertised. Easy to use, good seal.
D**D
The real stuff
Used this to seal an oil pan when I changed a rear main crankshaft seal. These don't use gaskets so you need RTV for them. Hasn't leaked in months now. Good product
B**N
just what i was looking for.
great product, works as expected.
Trustpilot
1 month ago
2 weeks ago