ASI 600



ASI 600 Hi-Temp Resistant RTV Silicone is a one-component, moisture cure, 100% RTV silicone that cures to form an extremely durable rubber that can withstand extreme heat while maintaining its physical properties.

Due to the formulation, ASI 600 can resist constant temperatures up to 500°F and intermittent temperatures up to 600°F. ASI 600 meets the requirements of FDA Regulation No. 21 CFR 177.2600 for food grade applications. ASI 600 Hi-Temp Resistant RTV Silicone can be applied to both vertical and overhead joints without sagging and is easy to extrude at both hot and cold temperatures. It will adhere to most common building materials (see list on back of TDS).


  • Resists Intermittent Temperatures Up To 600°F
  • Resistant to UV Degradation & Weathering
  • Withstands Extreme Cold & Extreme Heat
  • 25% Joint Movement Capability
  • One-Component, Easy To Use Formulation
  • Easy to Extrude At Cold Temperatures
  • Non-Slump, Can Use On Overhead & Vertical Applications
  • Excellent For Indoor & Outdoor Applications
  • Creates A Waterproof Seal

Physical properties

Physical PropertiesTest MethodResult
ViscosityASI Test Method976,000 cps (Spindle 7, 4 rpm)
Skin Formation TimeASI Test Method13 minutes (70°F, 50% RH)
DensityASTM D14758.4 lbs./gal
HardnessASTM C66125 (Shore A)
Extrusion RateASI Test Method362 g/min
Tensile StrengthASTM D412265 psi
Elongation at BreakASTM D412509%
Application TemperatureASI Test Method-35°F to 150 F
Gun GradeASI Test MethodPass (Non-Slump)
QUV TestingASTM G154Pass (10,000 hrs.)
Service TemperatureASI Test Method-50°F to 500°F
Typical Cure RateASI Test Methodhrs. (1/8" bead)

Strength will start to develop immediately and continue increasing for 7 days after application. ASI recommends testing strength and adhesion on the 7th day. ASI 600 suggested application temperature range: -35°F to 150°F. ASI 600 can be used at temperatures higher than 500°F for intermittent periods. Testing should be done to confirm temperature requirements are met.

Information on this data sheet can change without notice and it is therefore not recommended that these figures be used in spec writing. If you have any questions contact manufacturer’s sales and technical service department.

Conforms / Meets / Exceeds

  • AST C920 Class 25, Type S, Grade NS, Use NT, G, O
  • TT-S-01543A
  • TT-S-00230-C
  • MIL-A-46106A
  • FDA Regulation No. 21 CFR 177.2600
  • VOC Compliant (23 grams/liter ASTM D2369)

Common Substrates

  • Glass
  • Metal
  • Granite
  • Marble
  • Most Fiberglass
  • Most Wood Types
  • Aluminum
  • Ceramic
  • Natural & Synthetic Fiber
  • Most Painted Surfaces
  • Some Plastics

Common Applications

  • Industrial Ovens
  • RV & Trailer Manufacturing
  • Formed-In-Place Gasket Applications
  • Industrial Manufacturing Applications
  • High Temperature Gasketing Applications
  • HVAC Applications
  • Fireplace Manufacturing
  • Appliance Manufacturing
  • Sheet Metal Work & Sealing

Speak with a sales engineer to discuss ASI 600 or any of our other products or manufacturing services! Use our contact form or call 800-325-7040 now.