Dowsil 736 Heat Resistant Sealant

DOWSIL™ 736 Heat Resistant Sealant is a one-part, nonslumping paste that cures to a rubbery solid at room temperature on exposure to water vapor in the air. This silicone product is formulated to perform at temperatures ranging from -65 to 260°C for continuous operation and to 315°C for intermittent exposure. It can be used for numerous sealing and bonding applications.

Applications

The high temperature properties of this sealant make it ideally suited for:

• Sealing and encapsulating heating elements in appliances
• Aerospace gasketing
• Moving oven belts
• Industrial ovens
• Bag filters on smoke stacks
• Other critical bonding, sealing, potting, encapsulating and protective coatings where parts must perform at high temperatures

Features

• Will not sag or run
• May be applied overhead or on side walls
• May be used in applications with continuous exposure to 260°C and intermittent exposure to 315°C

Typical Properties

As Supplied

• Color: Red
• Flow/Slump: Nil
• Extrusion Rate (1/8 Inch Orifice, 90 psi): g/min 390
• Specific Gravity: 1.04
• Cure Characteristics – Exposed to Air, 25°C (77°F) and 50 Percent RH
  • Skin-over Time minutes 10
  • Tack-free Time minutes 17
  • Cure Time (3 mm [1/8 Inch] Thickness) hours 24

As Cured – After 72 Hours at 25°C (77°F) and 50 Percent RH

• Durometer Hardness, Shore A points 26
• Tensile Strength: 350 psi
• Elongation: 600%

Listings/Specifications

• Complies with FDA Regulation 21 CFR 177.2600, subject to end-use compliance with any applicable total extractives limitations, and for incidental food contact use in official establishments operating under the Federal Meat and Poultry Products Inspection Program.
• Listed by the National Sanitation Foundation under Standard 51 for direct contact with food.
• Listed by Underwriters Laboratories
• Designed to meet the requirements of MIL-A-46106 Rev. B

This product is part of the DOWSIL range