DOWSIL™ 732 Clear Multi-Purpose Silicone Sealant – 90 mL (3 oz) Tube

DOWSIL 732 by DOWSIL (Dow Corning) is a professional-grade multi-purpose silicone sealant available in 90 mL (3 oz) Tube format. It is designed for use on Glass, Metal, Ceramic, Plastic surfaces, delivering long-lasting adhesion, flexibility, and environmental resistance across a wide range of industrial, commercial, and specialized applications. Clear in color, this product is trusted by maintenance professionals, OEM manufacturers, and engineers worldwide who demand consistent, specification-grade silicone performance in every application.

Technical Information

DOWSIL 732 is a one-part, acetoxy-cure, general-purpose RTV silicone sealant that cures on exposure to atmospheric moisture to form a tough, flexible silicone elastomer. It provides reliable adhesion to glass, aluminum, ceramics, and most rigid plastics without a primer on clean, dry surfaces. The cured sealant withstands continuous service temperatures from -65°C to +204°C and resists UV radiation, ozone, and weathering, making it equally suited to indoor and outdoor sealing applications. With its fast skin-over time of approximately 10–20 minutes and full cure in 24 hours, DOWSIL 732 supports efficient production and maintenance workflows across construction, automotive, industrial, and electronic sealing applications.

Why Choose DOWSIL 732?

• ✅ No Primer Required — Bonds directly to glass, aluminum, ceramics, and most plastics
• ✅ Fast Skin-Over — Skins in 10–20 minutes for efficient workflow
• ✅ Weatherproof — Excellent UV, ozone, and moisture resistance for outdoor use
• ✅ High Temp Range — Continuous service from -65°C to +204°C
• ✅ General Purpose — Suitable for construction, automotive, industrial, and electronics

Frequently Asked Questions

Q: What is DOWSIL 732 silicone sealant used for?
A: DOWSIL 732 is a general-purpose, one-part RTV silicone sealant used for sealing, bonding, and glazing on glass, aluminum, ceramics, and most plastics in construction, automotive, and industrial applications.

Q: What is the MPN for DOWSIL 732 Clear 90 mL tube?
A: The Manufacturer Part Number (MPN) is 3138356.

Q: Is DOWSIL 732 paintable?
A: DOWSIL 732 silicone is generally not paintable once cured. If paint adhesion is required, consider a paintable siliconized acrylic sealant for that application.

Q: What temperature range can DOWSIL 732 withstand?
A: DOWSIL 732 resists temperatures from approximately -65°C to +204°C (-85°F to +400°F), making it suitable for a wide range of industrial and building sealing applications.

Q: Does DOWSIL 732 require a primer?
A: DOWSIL 732 adheres directly to most clean, dry surfaces without a primer. However, using a silicone primer on difficult substrates such as porous stone or some plastics can enhance long-term bond strength.