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Permatex 27037 Optimum Black Gasket Maker is a high-performance silicone sealant designed for modern automotive applications requiring superior oil resistance and flexibility. It outperforms Ultra Black by 15% in strength and offers 60% more flexibility, withstanding extreme temperatures from -65°F to 500°F. Sensor-safe, low odor, and non-corrosive, it’s ideal for valve covers, oil pans, and other critical engine components. Comes with two nozzles for precise application.
| ASIN | B072MRCG8W |
| Best Sellers Rank | 43,214 in Automotive ( See Top 100 in Automotive ) 305 in Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Colour | Optimum Black |
| Compatible Material | Rubber |
| Country Of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 694 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 | 3 Ounces |
| Item dimensions L x W x H | 32 x 97 x 203 millimetres |
| Item weight | 3 Ounces |
| Manufacturer | Permatex |
| Manufacturer Part Number | 27037 |
| Material | Silicone |
| Model Number | 27037 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Style | Optimum |
| Style Name | Optimum |
| UPC | 686226270375 |
| Unit Count | 1.0 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.
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
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.
P**S
No complaints here
These sealants work great.
Trustpilot
1 month ago
2 months ago