Sika Sikasil GP HT Red 10oz

Sikasil GP HT Hi Temp Red is a general purpose, one-component, non-sag, elastomeric, RTV acetoxy silicone sealant with good adhesion characteristics for general sealing and bonding applications. Sikasil GP Hi Temp Red maintains elastomeric properties up to 500° F continuous, 550°F intermittent.

Fast cure - move assembled or sealed parts quickly
High temperature, UV, and ozone resistance
Excellent adhesion, bonds to many substrates without priming

$12.33

Availability: In stock ( 14 Available )

SKU

17876

Sika Sikasil-GP HT Red – 10oz Cartridge

Sika Sikasil-GP HT Red is a one-component, acetoxy-cure silicone sealant designed for high-temperature sealing applications. Formulated with RTV silicone chemistry, it cures rapidly upon contact with moisture and retains flexibility even after prolonged exposure to extreme heat. With a service range up to 500°F continuous and 550°F intermittent, Sikasil-GP HT Red is ideal for sealing around ovens, ducts, engines, and other high-heat equipment. It adheres well to non-porous materials including glass, ceramic, metal, and plastics—without the need for primers.

Key Features:

High-temperature resistance: 500°F continuous, 550°F intermittent
Acetoxy cure with fast skin time (~13 minutes)
Excellent UV, ozone, and weather resistance
Non-sag, one-component RTV silicone formula
Superior adhesion to glass, tile, fiberglass, ceramic, and metal
Anti-microbial additive for mold resistance

Applications:

HVAC and ductwork sealing
High-temp gasketing and bonding
Appliance and equipment assembly
Window and skylight sealing
Marine and automotive sealing

Technical Specifications:

Property	Value
Base	1-C RTV Silicone
Cure Mechanism	Moisture-cure (Acetoxy)
Skin Time	~13 minutes
Shore A Hardness	20
Tensile Strength	200 psi
Elongation at Break	500%
Peel Strength	20 pli
Service Temperature	-60°F to 500°F (continuous), 550°F (intermittent)
Application Temperature	41°F to 104°F
Shelf Life	24 months
Color	Red
Packaging	10 oz cartridge

Frequently Asked Questions:

Can Sikasil-GP HT Red be painted?
No, this sealant cannot be painted over once cured.

What substrates does this sealant adhere to?
It adheres well to glass, tile, fiberglass, ceramic, plastic, wood, and painted metals—often without a primer.

Is Sikasil-GP HT Red suitable for continuous water immersion?
No, it is not intended for submerged or continuous water immersion applications.

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