DOWSIL™ 736 Heat Resistant Sealant is a one-part, non-slumping red silicone paste that cures to a rubbery solid at room temperature on exposure to water vapour in the air. It is formulated for continuous operation from −65 to 260 °C and for intermittent exposure to 315 °C. It will not sag or run and may be applied overhead or on side walls. It is used for aerospace gasketing, sealing and encapsulating heating elements in appliances, industrial ovens, and bonding, sealing, potting and protective coating of parts that must perform at high temperatures. Acetic acid odour is given off during cure and disappears once the cure is complete.
Specifications
- Designed to meet the requirements of MIL-A-46106 Rev. B
- Complies with FDA 21 CFR 177.2600; listed by NSF under Standard 51 and by Underwriters Laboratories
Typical Properties
- Red; flow/slump nil; specific gravity 1.04; extrusion rate (3.2 mm orifice, 90 psi) 390 g/min
- At 25 °C and 50% RH: skin-over time 10 min, tack-free time 17 min, cure time at 3 mm thickness 24 hours
- After 72 hours cure: hardness 26 Shore A; tensile strength 350 psi; elongation 600%
Use and Storage
- Tooling should be completed within 5 min after application; with absolute confinement the cure may not be completed
- For stronger bonds, prime all surfaces except rubber and silicone rubber
- Store at or below 32 °C in original, unopened containers
| Packing | 90 ML or 300 ML |