10 BEST HIGH TEMPERATURE CAULK for sale in 2025 – compare between the best high temperature caulk on sale.

Rank Product Rating
1
Rutland Products 76C 500-Degree RTV High Heat Silicone Seal, 10.3-Ounce Cartridge, Clear
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265 Reviews
Product Highlights
  • Rutland High Temperature Silicone is a great solution to your sealant and adhesive needs
  • Forms a tough and flexible seal
  • Will adhere to most clean surfaces including: glass, metal, plastics, fiberglass, wood, brick, and stone.
  • Seal fireplace inserts, repair solar panels, apply ceramic tiles to your fireplace surround or heat shielding behind your stove, the uses are endless

$12.92
2
DAP 7079818854 High Heat Mortar Fire Stop Caulk, 10 Fl Oz, Black
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201 Reviews
Product Highlights
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Dap
  • Super tough, high temperature mortar

$5.90
3
Red Devil 0896 Extreme Temperature HVAC/R Silicone Sealant (White), 280 ml, 1 Pack
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19 Reviews
Product Highlights
  • Temperature range of -60 degrees Fahrenheit to 400 degrees Fahrenheit
  • Excellent adhesion
  • Long lasting flexibility
  • Will not crack, shrink or peel

$9.99
4
High-Temp Silicone Sealant, 10.3 fl. oz. Cartridge
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10 Reviews
Product Highlights
  • High-temperature silicone sealant
  • Insulates electrically and thermally
  • Item Package Dimension: 8.0" L x 6.0" W x 11.5" H
  • Item Package Weight: 10.0 lb

$7.56
5
Rutland 500°RTV High Heat Silicone (Black) 10.3 Oz Cartridge
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58 Reviews
Product Highlights
  • Rutland High Temperature Silicone is a great solution to your sealant and adhesive needs
  • Forms a tough and flexible seal
  • Will adhere to most clean surfaces including: glass, metal, plastics, fiberglass, wood, brick, and stone.
  • Seal fireplace inserts, repair solar panels, apply ceramic tiles to your fireplace surround or heat shielding behind your stove, the uses are endless

$15.56
6
Rutland 500°RTV High Heat Silicone (Black) 2.7 Oz. Tube
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89 Reviews
Product Highlights
  • Rutland High Temperature Silicone is a great solution to your sealant and adhesive needs
  • Forms a tough and flexible seal
  • Will adhere to most clean surfaces including: glass, metal, plastics, fiberglass, wood, brick, and stone.
  • Seal fireplace inserts, repair solar panels, apply ceramic tiles to your fireplace surround or heat shielding behind your stove, the uses are endless

$9.73
7
High Temp Silicone Sealant Professional Grade-High Temp 100% RTV Silicone- Black 10.1 oz
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Product Highlights
  • Protect and seal with 100% RTV Silicone Professional Grade
  • Can be used indoors or outdoors. Weather resistant.
  • Withstands up to 500 degrees F
  • Creates a seal that will not crack, chalk or shrink. Stays flexible.

$14.66
8
3M 1000-N/S-10.1OZ Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge
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Product Highlights
  • Meets UL Water Leakage Test, W Rating (Class 1 requirements)
  • Firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
  • Offers compression and extension capability of ±31% for dynamic and static construction joints
  • Fire resistance tested for construction joint (including curtain wall) systems in accordance with ASTM E 1966 (UL 2079), ASTM E 2307

$14.49 $12.94
9
MEECO'S RED DEVIL 121 Furnace Cement and Fireplace Mortar
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124 Reviews
Product Highlights
  • Pre-mixed, ready-to-use, high-temperature cement/mortar
  • Designed for patching or repairing cracked or chipped firebrick and mortar
  • Withstands working temperatures up to 2,000-Degrees F
  • Gray in color

$11.99
10
Silco Incorporated RTV 6500 Sil-Bond 2.8 fl.oz High Temperature Silicone Adhesive, Red (2)
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4 Reviews
Product Highlights
  • Silco RTV adhesive resists temps up to 650F

$11.59

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