Dowsil 736 High Temperature Industrial Sealants

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Dowsil 736 High Temperature Industrial Sealants

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Dowsil 736 High Temperature Industrial Sealants Specification

Surface Of Application
Metal, glass, ceramics, plastics

Types Of Chemical
Silicone Sealant

Hardness
Shore A 25

Holding Power
Excellent at elevated temperatures

Shelf Life
12 months

Tensile Strength
1.8 MPa

Adhesive Type
Single-component, Acetoxy Cure

Packaging Size
300 ml cartridge

Storage Temperature
Below 27C

Form
Paste

Features
High temperature resistance, flexible, weather resistant, RTV (room temperature vulcanizing)

Material
Silicone Elastomer

Glue thickness
1-6 mm

CAS No
63148-62-9

Other Names
Silicone Sealant, RTV Silicone

Usage
Industrial

Grade
High Temperature

Purity
99%

Application
Sealing and bonding in high-temperature environments, such as furnaces, ovens, and industrial equipment

Color
Red

Physical State
Paste

Density
1.04 g/cm³

Elongation at Break
400%

Chemical Resistance
Resistant to water, ozone, and many chemicals

Standards Compliance
Meets ASTM C920, FDA 21 CFR 177.2600

Service Temperature Range
-60°C to +315°C

Curing Time
Tack free in 17 minutes, full cure in 24 hours (at 25°C/50% RH)

Temperature Resistance
Up to 315°C (600°F)

Odor
Acetic acid

Application Method
Caulking gun

Skin Formation Time
10-20 minutes

About Dowsil 736 High Temperature Industrial Sealants

DOWSIL 733 Glass and Metal Sealant is a paste-like, one-component material that cures to a tough, rubbery solid upon exposure to moisture in the air. Because it does not flow, this sealant can be applied overhead or on sidewall joints and surfaces without sagging, slumping or running off. DOWSIL 733 Glass and Metal Sealant is specially formulated to provide good adhesion to various substrates.

LISTINGS / SPECIFICATONS

Recognized under UL 94 HB Complies with FDA

Regulation 21 CFR 177.2600 for incidental contact with food.

Robust Heat Resistance

Engineered to operate reliably between -60C and +315C, Dowsil 736 provides trusted sealing and bonding even in extreme heat. Its advanced silicone formulation maintains integrity where other sealants might degrade, making it essential for high-temperature industrial applications.

Superior Durability and Flexibility

With an elongation at break of 400% and a Shore A hardness of 25, Dowsil 736 remains flexible while delivering robust sealing. It resists water, ozone, and many chemicals, ensuring long-lasting protection for metal, glass, ceramics, and plastics exposed to harsh environments.

Effortless Application and Fast Curing

Packaged in a 300 ml cartridge for standard caulking guns, this paste applies easily to vertical or horizontal surfaces. Skin forms in 10-20 minutes, and full cure is achieved in just 24 hours, streamlining installation and minimizing downtime in your maintenance or production processes.

FAQs of Dowsil 736 High Temperature Industrial Sealants:

Q: How do I properly apply Dowsil 736 High Temperature Sealant?

A: Clean and dry the bonding surfaces before applying. Use a standard caulking gun to dispense the sealant, forming a continuous bead 16 mm thick. Tool the sealant within 10-20 minutes of application for smooth adhesion. Let it cure for 24 hours at 25C and 50% relative humidity for optimal strength.

Q: What environments and materials is Dowsil 736 suitable for?

A: Dowsil 736 is designed for industrial settings exposed to extreme temperatures, such as furnaces and ovens. It adheres well to metal, glass, ceramics, and many plastics, making it versatile for sealing and bonding assemblies in demanding environments.

Q: When does Dowsil 736 reach full cure and become tack free?

A: The sealant becomes tack free in approximately 17 minutes after application and fully cures in 24 hours at 25C with 50% relative humidity. Cure time may vary with temperature, humidity, and bead thickness.

Q: What are the key benefits of using Dowsil 736 over standard sealants?

A: Dowsil 736 offers superior resistance to high temperatures (up to 315C), water, ozone, and many chemicals. Its excellent elongation and flexibility make it ideal where joints might expand or contract. Additionally, it meets ASTM C920 and FDA 21 CFR 177.2600 standards.

Q: Where should Dowsil 736 be stored for maximum shelf life?

A: To preserve its quality, store Dowsil 736 below 27C in a dry location. When stored correctly in unopened containers, it has a shelf life of up to 12 months from the manufacturing date.

Q: What is the recommended process for reapplying or repairing a seal made with Dowsil 736?

A: First, remove the old sealant and thoroughly clean the surface. Apply fresh Dowsil 736 following standard procedures. Ensure the new bead blends well into the original for consistent sealing and let it cure completely before subjecting to high temperatures.

Q: Can Dowsil 736 be used in food-related applications?

A: Yes, Dowsil 736 complies with FDA 21 CFR 177.2600, making it suitable for certain food contact applications. However, always verify specific requirements and consult with your local distributor to ensure compliance for your intended use.

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