A neutral cure silicone is a sealant which releases alcohol or another non-acidic substance while curing. Unlike an acetoxy silicone, a neutral cure silicone sealant is virtually odor-free. Because it does not release acid while curing, neutral cure silicones are popular choices for sealants for sensitive surfaces.

Also note: Neutral cure takes up 3 times longer to set, but has an overall higher grip, non-slump and high modulus rubber with long-term flexibility and durability. Materials will have an excellent resistance to weathering and ultraviolet rays.

Let’s take a look at a few of the neutral cure silicones carried by Chemical Concepts.

RTV 7500 Neutral Cure Silicone

This multi-surface one-part Industrial/Construction Grade Silicone Sealant is a one component, low modulus, neutral cure silicone sealant and adhesive created to bond a wide variety of building materials. This product is specifically formulated to offer all weather performance to meet today’s Green Building Standards.

When fully cured, this unique VOC compliant formula offers UV stability and tenacious adhesion to these materials:

• PVC,
• Concrete,
• Glass,
• Aluminum,
• Painted surfaces,
• Wood and plywood,
• Stucco,
• Building paper,
• Window wrap,
• Fiber cement,
• Brick,
• Stone,
• Steel,
• Ceramic,
• Porcelain,
• Masonry

A Few Benefits and Advantages that RTV 7500 offers:

• Multi-Surface,
• Permanent Flexibility,
• Excellent Weatherability,
• Excellent Adhesion,
• Non-Corrosive,
• Low Odor,
• 50% Movement Capability,
• Long Life,
• VOC Compliant,
• Non-Flammable,
• Waterproof

ShinEtsu KE45-AL Aluminum Neutral Cure Adhesive Sealant

Shin-Etsu’s KE-45 is a single component thixotropic adhesive that will cure into a tough, durable, resilient elastomer that cures when exposed to moisture in the air at room temperature. KE-45 is a low odor, neutral cure, non-corrosive product that exhibits excellent, unprimed adhesion to metals, plastics, glass, and ceramics.

A Few Benefits and Advantages that ShinEtsu KE45-AL Offers:

Single Component

• Room-temperature cure,
• Thixotropic paste,
• Low odor and non-corrosive

A Few Suggested Uses:

• Form-in-place gasketing,
• Sealing trailers, truck cabs,
• Sealing electronics,
• Adhering auto and appliance trim including metal, fabric and fabric backed plastics,
• Sealing windows in oven doors and flues on gas appliances, flanged pipe joints, access joints,
• Bonding and sealing appliance parts,
• Sealing marine cabins and windows

Sikasil 728 SL Low Modulus Neutral Cure Silicone

Sikasil-728 SL is a self-leveling, one-component, ultra-low modulus elastomeric, neutral cure silicone sealant for sealing of joints in pavements. A few of the substrates for which this product is a good match are concrete, steel, glass, aluminum, tile, ceramic, masonry, asphalt, brick, stone and granite.

A Few Suggested Uses for Sikasil-728 SL:

• Highways
• Airports
• Bridges
• Parking structure top decks
• Driveways
• Decks
• Expansion joints
• Saw cut joints

A Few Benefits and Advantages that Sikasil-728 SL Offers:

• Ready to use
• Requires no tooling (meaning lower labor costs)
• Very high movement capability (ASTM C-719) +100%, -50%
• Excellent flexibility for use in extremely high and low temperature climates (can be used in all seasons)
• Very good adhesion, especially to concrete
• Extremely long service life due the outstanding UV resistance

View our complete inventory of neutral cure silicones here.

Do you have questions about these products or any of our other silicones? Our experienced sales team can answer questions about what substrates make the best match with what product and much more. Call us, toll-free, at 800-220-1966 or email us at [email protected]. We’ll be happy to help!