Auralex StopGap Acoustical Sealant Tube, 28 oz

SKU: AURSTOPGAP MFR: STOPGAP
$21.99
Earn VIP Reward Points

Key Features

  • Seal gaps easily with Auralex StopGap, your go-to acoustic sealant for soundproofing!
  • Maximize your studio's acoustic treatment by sealing cracks to block unwanted noise.
  • Apply this 28oz acoustic sealant tube to improve sound absorption in any room setup.
  • Ensure professional-grade sound quality by preventing sound leaks; easy acoustic fix!
  • Our StopGap sealant offers a simple, cost-effective solution for sound isolation needs.
  • Achieve better sound control in your studio; a must-have acoustic treatment accessory.
See More Product Details
Special Order?Estimated to Ship: 08/17/2025
Calculate Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

1 Year

$2.99

2 Year

$4.99

3 Year

$8.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Auralex StopGap Specifications

  • Material

    Acoustic

  • Capacity

    28 oz (828.05ml)

  • UPC Code

    818105005062

About Auralex StopGap

StopGap Acoustical Sealant is a highly elastic, water-based sealant used for reducing sound transmission at the perimeter of wall systems or around electrical box cutouts to achieve specified STC/MTC values.

The surface dries to a tough film but the sealant remains flexible and stays pliable for up to 5 times longer than alternative brands. And unlike other products, Stop-Gap has no residual run-off. StopGap is paintable (dries white) and non-staining, and meets ASTM E-84 standards for flame retardancy.

StopGap comes in a large, 28 oz. caulking tube and therefore requires a larger than normal-sized caulking gun, which can be purchased at any local hardware store.

• Auralex StopGap will achieve a Sound Transmission Class (STC) of 53 when applying it in accordance with ASTM C-919 "Standard Practice for use of Sealants in Acoustical Applications". To achieve the 53 STC, StopGap should be applied as two beads of sealant at the top, bottom and all perimeter edges.

• Coverage per 28 oz. cartridge is approximately -32 linear ft. with a 3/8 inch bead applied.

Auralex StopGap Features

  • Wall, Ceiling & Floor Applications
  • Maintains STC Of Wall System
  • Permanently Flexible & Paintable
  • Class A Per ASTM E84

Key Features

  • Seal gaps easily with Auralex StopGap, your go-to acoustic sealant for soundproofing!
  • Maximize your studio's acoustic treatment by sealing cracks to block unwanted noise.
  • Apply this 28oz acoustic sealant tube to improve sound absorption in any room setup.
  • Ensure professional-grade sound quality by preventing sound leaks; easy acoustic fix!
  • Our StopGap sealant offers a simple, cost-effective solution for sound isolation needs.
  • Achieve better sound control in your studio; a must-have acoustic treatment accessory.