Rectorseal 20.2 Oz. Metacaulk 835+ Silicone Firestop Sealant, Caulk Grade
Rectorseal 66300
SKU RSL-66300
RectorSeal's 20.2 oz. Metacaulk 835+ caulk grade silicone firestop sealant is made for through penetration firestops. Prevents flames/smoke/gas/water from spreading through penetration openings. Check out more firestop products at HomElectrical today!
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RectorSeal's 20.2 oz. Metacaulk 835+ caulk grade silicone firestop sealant is made for through penetration firestops. Prevents flames/smoke/gas/water from spreading through penetration openings. Check out more firestop products at HomElectrical today!
- 20.2 Ounce.
- STC rating 55 as well as FBC System Compatible - indicates that product has been tested, and is monitored on an ongoing basis to assure chemical compatibility with FlowGuard Gold, BlazeMaster and Corzan pipe and fittings.
- Weather/Chemical resistant.
- A single component penetration sealant system - no mixing or required additives needed.
- A special purpose firestop sealant.
- Flexible and non-slump formula.
- Neutral, moisture cure and low odor.
- Excellent moisture resistance.
- Protected in wet and dry stages against mold growth with a combination of biocides.
- Use in interior or exterior expansion, contraction and control joints.
- 2 Year shelf life.
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- Certifications: UL Certified, FBC, FM Approved.
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Rectorseal 66300 Description
- 20.2 Ounce.
- STC rating 55 as well as FBC System Compatible - indicates that product has been tested, and is monitored on an ongoing basis to assure chemical compatibility with FlowGuard Gold, BlazeMaster and Corzan pipe and fittings.
- Weather/Chemical resistant.
- A single component penetration sealant system - no mixing or required additives needed.
- A special purpose firestop sealant.
- Flexible and non-slump formula.
- Neutral, moisture cure and low odor.
- Excellent moisture resistance.
- Protected in wet and dry stages against mold growth with a combination of biocides.
- Use in interior or exterior expansion, contraction and control joints.
- 2 Year shelf life.
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- Certifications: UL Certified, FBC, FM Approved.
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Get FREE shipping on eligible order of $99+
Free Shipping Eligible
$45.36Each
Sold by the Case of 12 for only $544.32
Ships between 08/07/2026 - 08/21/2026
Return180-day Return Policy
Product Specifications
| Part Number | 66300 |
| Certificate | UL Certified |
| Country of Origin | Canada |
| Weight | 1.83-lb |
| UPC | 021449663007 |
Manufacturer Description
20.2 OZ MC835+ CLK GRADE SAUSG
Resources & Download
A PDF viewer is required to view this product's information. Download Adobe Acrobat Viewer
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
RectorSeal's 20.2 oz. Metacaulk 835+ caulk grade silicone firestop sealant is made for through penetration firestops. Prevents flames/smoke/gas/water from spreading through penetration openings. Check out more firestop products at HomElectrical today!
Get FREE shipping on eligible order of $99+
Free Shipping Eligible
$45.36Each
Sold by the Case of 12 for only $544.32
Ships between 08/07/2026 - 08/21/2026
Return180-day Return Policy
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Rectorseal 66300 Description
- 20.2 Ounce.
- STC rating 55 as well as FBC System Compatible - indicates that product has been tested, and is monitored on an ongoing basis to assure chemical compatibility with FlowGuard Gold, BlazeMaster and Corzan pipe and fittings.
- Weather/Chemical resistant.
- A single component penetration sealant system - no mixing or required additives needed.
- A special purpose firestop sealant.
- Flexible and non-slump formula.
- Neutral, moisture cure and low odor.
- Excellent moisture resistance.
- Protected in wet and dry stages against mold growth with a combination of biocides.
- Use in interior or exterior expansion, contraction and control joints.
- 2 Year shelf life.
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- Certifications: UL Certified, FBC, FM Approved.
Product Specifications
| Part Number | 66300 |
| Certificate | UL Certified |
| Country of Origin | Canada |
| Weight | 1.83-lb |
| UPC | 021449663007 |
Manufacturer Description
20.2 OZ MC835+ CLK GRADE SAUSG
Resources & Download
A PDF viewer is required to view this product's information. Download Adobe Acrobat Viewer
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
Product Questions & Answers
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