8 oz. Block (screw cap with brush) Zoom

8 oz. Block (screw cap with brush)


Brand: Hercules

Qty Price
/ each
$250.80 / box (24 units x $10.45)
In Stock! Ships in 24-48 Hours
(44 Available)



Size: 8 oz
Max Pressure (PSI): 12000 psi (Hydraulic)
Temperature Range (F): -50°-450°F

Description for Hercules 15707


  • Temperature range: -50° to 450° F (on steel pipe)
  • Pressure: 12,000 psi (hydraulic), 2600 psi (gas)
  • Conforms to: Mil. Spec. Mil-S-45180 D. Blue.

  • All-purpose, tough, pliable seal for joints, valves, flanges, and gaskets
    Puts joints into service in minutes
  • An excellent gasket seal
  • Sets up quickly and dries to form a very tough, yet flexible seal which will not harden, crack, crumble or shrink
  • Seals old or worn fittings
  • Ideal for pumps, tanks and equipment carrying steam, water, oil, gasoline, fuel oil, hydraulic fluids, natural and LP gas (vapor state), anti-freeze, refrigerants except ammonia, lubricants, glycerin, solvents, brine and other gases, liquids and chemicals (see spec sheet for specifics).
  • For use on all metals, including galvanized steel, black iron, aluminum, copper, brass, stainless steel, and on PVC, ABS, and CPVC plastics (for use on specific brands of CPVC pipe, verify suitability with pipe manufacturer)
  • Provides leak-proof resistance to high pressure, temperature, expansion, contraction and extreme vibration. Grit-free; non-separating, distinctive non-runny consistency
  • Can easily be cleaned from tools and hands with isopropyl alcohol or Hercules for Hands towels

8 oz. Block (screw cap with brush)


by PowerReviews
Hercules4 oz. Block (screw cap with brush)

(based on 5 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 5 customers

Displaying reviews 1-5

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Remains tacky, doesn't harden so cannot use for my purpose

By mls

from Melbourne, FL

Verified Buyer

Comments about 8 oz. Block (screw cap with brush):

Remains tacky, doesn't harden so cannot use for my purpose. I needed to have tube thread sealed without worrying for leakage so did not use. Refund was easy and excellent customer support. Thanks.


Product is fine and is as advertised

By Al the logger

from Boise, ID

Verified Buyer

Comments about 4 oz. Block (screw cap with brush):

Good product.

(1 of 2 customers found this review helpful)


It works

By zorro6204

from Bellevue, WA

Verified Reviewer

Comments about 4 oz. Block (screw cap with brush):

I hate tapered thread connections, I do everything by the book, a wrap of teflon tape in the right direction, in back of the engagement threads, supplemented by some pipe compound a little further back. 50% of my connections weep. I don't even know why they make that stuff anymore.

Anyway, sometimes you have no choice, and after suffering through a weeping expansion tank connection (which had to be located below the hwt, meaning it had to be drained), I tried this. Voila, no more leaks.

Note I let the product cure or dry (or whatever) for as long as possible, overnight is good. Also, I tried Grrip with equal success, not sure there's any difference.

Finally, the brush in the can stinks, it's a bloody mess. I cut it off and strap a shortened art brush to the can with a hair scrunchy, much cleaner. This stuff sticks to surfaces like enamel paint.

(1 of 1 customers found this review helpful)


thread sealer

By G-P mechanic

from North Carolina

Verified Buyer

Comments about 4 oz. Block (screw cap with brush):

I used this on threads of 3/8" studs that screwed into an engine block to keep coolant from leaking. these studs are to hold a cylinder head on an antique car. I tried a couple of other things that didn't work but this worked great.

(1 of 1 customers found this review helpful)


Have been using this product for years

By Allan

from Florida

Verified Buyer

Comments about 16 oz. Block (screw cap with brush):

We thread steel tubes then couple and cap them and this product has always prformed well, sealing the threads with cutting oil residue on the pipes. We have tried other products and always come back to this one. When our normal supplier stopped carry this product we went right to the internet to find a new source of supply, as we wanted to stay with what worked best.

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1 Question | 1 Answer
Displaying question 1
  • 8 oz. Block (screw cap with brush)


    I have pvc pipe that connects into a cast iron pipe. There is a small leak somewhere in the connection. It has been sealed with a rubber waterproof sealant once but am wondering if this wouldn't be a better product. Can this be used over another product? Also, can it be used over a rubber material as well as pvc and cast iron? Are there any stores such as Menards, Lowes, Home Depot that carry your product?
    Asked on 6/26/2015 by Pinky from Iowa

    1 answer



      yes it can, how effective it is will depend on how big the leak is, yes it can. Not sure who else carries these products.

      Answered on 7/7/2015 by Supplyhouse Staff from New York
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