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🖤 Seal smart, seal strong — the black silicone that means business.
ASI 502 is a premium 100% RTV silicone sealant in a compact 2.8 oz squeeze tube, designed for professional-grade sealing with no sag or drip. It cures to a durable, flexible rubber that withstands extreme temperatures (-70°F to +400°F) and harsh weathering, while adhering to a wide range of materials including glass, metal, wood, and plastics. FDA-approved for incidental food contact, its sleek black finish blends seamlessly on dark surfaces, making it the go-to choice for both industrial and kitchen applications.
| ASIN | B0149J4JGS |
| Best Sellers Rank | #36,715 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #86 in Silicone Adhesives |
| Brand | ASI Silicone |
| Brand Name | ASI Silicone |
| Color | Black |
| Compatible Material | Ceramic, Glass, Metal, Plastic, Porcelain, Rubber, Wood |
| Customer Reviews | 4.5 out of 5 stars 655 Reviews |
| Item Form | Paste |
| Item Weight | 2.8 ounces |
| Manufacturer | ASI Silicone |
| Material | Silicone |
| Material Type | Silicone |
| Model | 502 2.8oz Black |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 502 2.8oz Black |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Any surface that requires sealing |
| Unit Count | 2.8 Ounce |
| Water Resistance Level | Water Resistant |
G**T
Very Easy to Use
This silicone is easy to apply. You do not need a caulk gun or any other tool. You apply it straight from the tube. I found it to be very clean. It has a semi-gloss to satin presentation when dried. I used it to fill some gaps in some black painted wood that I put together and it was perfect. It blended right in with the pained wood. It adhered to the wood very well and filled the gaps seamlessly. It looks great.
C**N
Quality product.
Great product. Dries super fast, is what it says it is, 100%, black. I used it to repair a 30 year old US Divers mask, and am happy with the result.
R**R
Worked so far for what I needed. Not thrilled with the overall curing time.
I ordered this to use on 2 cigarette lighter (power points) that I replaced in an older vehicle. The replacements were supposed to be OEM fits, but were not, and would not stay in the receptacle holes in the dashboard. I got this to put around the lips of the receptacle holes and then braced some wood against them while the adhesive initially cured. So far, this has done what I expected. The only drawback is the curing times. Initial cure/set time is 24 hours. Final cure is 7 days! I did mine one at a time so that I could allow the complete week to cure. These seem to hold well (so far anyway). It is a messy product. I had to keep some rubbing alcohol and paper towel handy to clean excess and any accidental applications to adjacent areas. The consistency reminds me of Permatex. So far, the cap kept the stuff permeable and liquid enough from using it the first time, and after a week. I don't know how well it will keep it from hardening inside the nozzle over time. It was reasonably priced for as well as it has worked.
A**R
Worked as expected
This silicone worked as expected and filled the crevices well. The black blends fairly well with my dark grey tiles and black grout, though it is shinier than what I wanted. It still lols good and met my expectations.
D**A
Black chalk
Works great
J**E
Great for kitchen sink seal!
Worked great for our below kitchen sink which is black on black granite. Can't see the seal like the clear silicon that the installers used. be mindful if you use it for this, remember to clean occasionally!
W**R
Not disappointed!
Not much to say really- it worked just fine for me -
J**S
They say it’s black but when it dries, it’s turns gray
It’s a good silicon, but it takes a long time to set up and when it dry, it turns gray, which was not my cup of tea
D**L
Delicious
It was delicious, tasted like liquorice, and long lasting too
D**E
Fixed a pot handle
I had an old pan that the handle cracked on. Thought this hi temperature silicone might work for a repair. Handle is once again secure and have ran pot through dishwasher several times and silicone looks like new
S**S
Unable to store and use on second project.
First time use/application product works as expected. Had extra caulking. Attempted to use caulking on a second project and found that it had cured inside tube.
Trustpilot
4 days ago
1 month ago