Smoke & Acoustic Sealant

RectorSeal Smoke and Acoustic Sealant is high-grade acrylic latex sealant that permanently seals penetrations, membrane openings, & static/dynamic joints in smoke & sound-rated assemblies. Tested to ASTM E84, ASTM E90, ASTM E1399, ASTM C834.

  • Tested for air leakage in accordance to modified UL 1479 and modified UL 2079.
  • Low VOC and Meets LEED criteria under Environmental Air Quality and Regional Materials.
  • Paintable, Flexible set and Easy to dispense. Water clean up, May be used in vertical and horizontal assemblies in linear joints in walls or floors.
  • Interior grade and Protected in wet and dry stages against mold growth with a combination of biocides.
  • STC rating 69- highest STC rating in market (tested to E90 standards as a smoke sealant)

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For interior use to prevent smoke passage & impede sound transfer in non-fire rated assemblies. Can install around pipe, conduit, electrical cable/boxes ventilation duct, & other through/membrane penetration in non-fire rated assembly.
More Information
Brand : Metacaulk
Performance Our on-site fire test laboratory is designated under the UL Witness Test Data Program (WTDP), allowing for thorough product development, direct testing and advanced response to customer needs for UL Listed systems.
Versatility Metacaulk systems offer a holistic approach to firestop applications and where field conditions differ, Metacaulk can support with structured engineered solutions.
COST SAVINGS Metacaulk products & systems offer major advantages for the installer with economical and reliable solutions.

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The Industry's Best Product Warranties

Minimum 3-year limited warranty on RectorSeal Products. No registration required.


Outstanding Technical Customer Support

Providing exceptional technical customer support for on-site job requirements and project specifications.

Product Availability and Fulfillment

Delivering a seamless purchasing experience by offering a diverse selection of products, ensuring availability and quick fulfillment.

Complimentary eTraining Courses

Offering a variety of eTraining from self-directed courses via RectorSeal Academy, on-demand one-on-one training or live webinars.


“RectorSeal is commited to achieve Total Customer Satisfaction by exceeding customer’s expectations, requirements and needs”

We assure our quality policy commitment by:

VOICE OF THE CUSTOMER Monitoring the Voice of Customer and taking appropriated actions.
talents and competencies Effectively developing all employees’ talents and competencies.
key performance indicators Tracking and improving our Key Performance Indicators (KPIs).
Quality products Establishing robust processes to deliver quality products.
on-time and complete Delivering on-time and complete customer orders.
continuously improving Establishing and continuously improving our quality management system.