Rectorseal 10.3 Oz. Metacaulk 950 Firestop Sealant
Rectorseal 66643
SKU RSL-66643
RectorSeal's 10.3 oz. Metacaulk 950 firestop sealant prevents flames/smoke/gas/water from moving through penetrations and forms a hard char. Browse more RectorSeal firestop products at HomElectrical.com today!
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RectorSeal's 10.3 oz. Metacaulk 950 firestop sealant prevents flames/smoke/gas/water from moving through penetrations and forms a hard char. Browse more RectorSeal firestop products at HomElectrical.com today!
- 10.3 Ounce.
- Inorganic and has No Volatile Solvents- useful when installing in confined spaces or occupied areas, and VOC compliant and Protected in both wet or dry stages against mold growth with a combination of biocides.
- A single component penetration sealant system, no mixing or special skills necessary and no required additives.
- Rated for ASTM E814 (UL 1479), ASTM E1966 (UL 2079).
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- An easy installation sealant with water cleanup capabilities.
- Non-slumping and forms a hard retrofittable surface.
- Forms a hard char, Formulated with incombustible inorganic materials and won't create smoke or toxic gases, and Does not have Asbestos Fillers.
- Resistant to chemical exposure.
- Certifications: UL Certified, FM Approved, cETLus Listed, Clean Air Gold.
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Rectorseal 66643 Description
- 10.3 Ounce.
- Inorganic and has No Volatile Solvents- useful when installing in confined spaces or occupied areas, and VOC compliant and Protected in both wet or dry stages against mold growth with a combination of biocides.
- A single component penetration sealant system, no mixing or special skills necessary and no required additives.
- Rated for ASTM E814 (UL 1479), ASTM E1966 (UL 2079).
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- An easy installation sealant with water cleanup capabilities.
- Non-slumping and forms a hard retrofittable surface.
- Forms a hard char, Formulated with incombustible inorganic materials and won't create smoke or toxic gases, and Does not have Asbestos Fillers.
- Resistant to chemical exposure.
- Certifications: UL Certified, FM Approved, cETLus Listed, Clean Air Gold.
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Get FREE shipping on eligible order of $99+
Free Shipping Eligible
$29.55Each
Sold by the Case of 12 for only $354.60
Ships between 08/05/2026 - 08/19/2026
Return180-day Return Policy
Made in the U.S.A.
This item is proudly made in the United States of America.
Product Specifications
| Part Number | 66643 |
| Country of Origin | USA |
| Weight | 1.33-lb |
| UPC | 021449666435 |
Manufacturer Description
10.3 OZ METACAULK 950 12PK
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 10.3 oz. Metacaulk 950 firestop sealant prevents flames/smoke/gas/water from moving through penetrations and forms a hard char. Browse more RectorSeal firestop products at HomElectrical.com today!
Get FREE shipping on eligible order of $99+
Free Shipping Eligible
$29.55Each
Sold by the Case of 12 for only $354.60
Ships between 08/05/2026 - 08/19/2026
Return180-day Return Policy
Made in the U.S.A.
This item is proudly made in the United States of America.
Similar Adhesive, Sealant & Corrosion Inhibitor Products
Rectorseal 66643 Description
- 10.3 Ounce.
- Inorganic and has No Volatile Solvents- useful when installing in confined spaces or occupied areas, and VOC compliant and Protected in both wet or dry stages against mold growth with a combination of biocides.
- A single component penetration sealant system, no mixing or special skills necessary and no required additives.
- Rated for ASTM E814 (UL 1479), ASTM E1966 (UL 2079).
- Applied with a conventional caulking gun, trowel or with pumping equipment.
- An easy installation sealant with water cleanup capabilities.
- Non-slumping and forms a hard retrofittable surface.
- Forms a hard char, Formulated with incombustible inorganic materials and won't create smoke or toxic gases, and Does not have Asbestos Fillers.
- Resistant to chemical exposure.
- Certifications: UL Certified, FM Approved, cETLus Listed, Clean Air Gold.
Product Specifications
| Part Number | 66643 |
| Country of Origin | USA |
| Weight | 1.33-lb |
| UPC | 021449666435 |
Manufacturer Description
10.3 OZ METACAULK 950 12PK
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.
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