OSI® Pro-Series SC-175 Acoustical Sound Sealant (Case of 12)

OSI® Pro-Series SC-175 Acoustical Sound Sealant (Case of 12)

Seal cracks or gaps in your walls to prevent sound transmission with this acoustical sound sealant. OSI® Pro-Series SC-175 Acoustical Sound Sealant is VOC compliant, non-flammable, easy to apply, non-staining and will not harden, crack or separate.


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Weight 40 lbs
Coverage 1032 linear ft. (86 Lft./tube, 1/4 in. bead)
Quantity Case of 12
Availability Usually ships in 1-3 business days

If you have an industrial building, office or facility with cracks and gaps in the walls that allow air to enter, you probably have a soundproofing problem. Even if your building has soundproofing installed, without covering up those cracks, it will be impossible to reach a satisfactory STC (Sound Transmission Class).

Fortunately, Soundproof Cow has you covered. Order a case of our acoustical sound sealant, and seal all those cracks thoroughly to prevent air infiltration and sound transmission. Each case contains 12 tubes that hold 86 linear feet of sound sealant, for a total of 1,032 linear feet — enough to seal the cracks of most major sealing jobs.

Our OSI® Pro-Series SC-175 Acoustical Sound Sealant is water-based and non-flammable. This sealant is a flexible solution that will not migrate and that you can paint right over once it cures, rendering it undetectable. Use this sound sealant to seal cracks in drywall, metal, concrete and many other materials. It’s VOC-compliant, so it meets LEED requirements and can be used in exposed or unexposed soundproofing applications. Our acoustical sound sealant is UL-tested and classified. It will not crack, harden or separate. Application is easy, as is cleanup, which requires only soap and water.

With a case of our OSI® Pro-Series SC-175 Acoustical Sound Sealant, you can make sure you always have a tube on hand when you encounter a crack. Using this sealant wherever you spot air infiltration can increase energy-efficiency, reduce moisture buildup and, of course, protect your facility from harsh outside noises.

You can only fully appreciate the properties of this amazing sound sealant once you’ve seen it in action. Your case will ship in just a few days or less, so give us a call at 1-866-949-9269 and place that order now!


OSI® Pro-Series® SC-175™ Acoustical Sound Sealant is a water-based sealant designed to reduce sound transmission in both exposed and unexposed walls and partition systems. Its’ Primary function is to achieve and maintain the specific STC (Sound Transmission Class) value of the system design. VOC compliant.

Product Availability

Also available in Single Tube


  • UL-tested and classified
  • Non-flammable formulation
  • Easy application and clean up
  • Will not harden, crack or separate
  • Non-staining and non-migrating
  • High degree of adhesive and cohesive strength

Instructions / Details


Soap and Water

Drytime (Cure Time)

2-7 Days

Best Uses

OSI® Pro-Series® SC-175™ Acoustical Sound Sealant was developed primarily for commercial construction utilizing lightweight cavity walls and floor systems. The sealant is used for exposed and unexposed applications at perimeter joints, floor and ceiling runners (either wood or metal), cut-outs in gypsum board, veneer plaster systems and other areas where a sound rated assembly is required.

Customer Reviews

Average Customer Ratings: 4.8 (34 reviews)

The times I talked with you on the telephone and corresponded through email you have been very helpful and efficient. I would highly recommend Soundproofcow.com to anyone!

– S. Cimino, PA

I have emailed a lot of different manufactures and I have to say your customer service is head and shoulders above all of them. I emailed your company at about 9pm my time and when I woke up the next morning you had already answered my question and then the follow up was a few hours later. I am impressed. Thanks a lot for the quick turn around!

– E. Gustafson, NV

I just wanted to send a quick thank you for your rapid response and helpfulness. I very much appreciated it. You have been responsive in every way all through the process. It has been a pleasure doing business with you and your company.

– T. Alexander, CA

I just wanted to let you know that in the end, sealing the air spaces on this door worked just fine and took care of the problem.

I really appreciate you taking so much time to share your expertise with me, and in particular recommending I try the simpler solution before investing in more expensive noise barriers. That is a big credit to you and your business.

– Mike

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If you need a quote quickly and would rather talk to a warm body, then dial 1-866-949-9269. No pushy sales guys…promise.

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