NuFlex 302 cures to form a tough, rubbery solid upon exposure to moisture in the air. Because it does not flow due to its own weight, the sealant can be applied overhead or on sidewall joints and surfaces without sagging, slumping or running off.

NuFlex 302 General Purpose Silicone Sealant is a medium modulus one-component acetoxy cure, non-sag caulking material. NuFlex 302 General Purpose Silicone Sealant cures to form a sturdy, rubbery solid upon exposure to moisture in the air. Due to its non-sag properties, the sealant can be applied overhead or on sidewall joints and surfaces without sagging, slumping, or running off. It adheres to most non-porous construction substrates.
NuFlex 302 has excellent resistance to weathering, vibration, moisture, ozone, and extreme temperatures. It may be applied in sub-zero temperatures without loss of extrusion or physical property characteristics and is effective to -46C (-50F).

Features:

• Acetoxy cure
• 100% silicone
• NuFlex 302 has achieved GREENGUARD GOLD Certification
• Certified by NSF
• Water-resistant before, during, and after cure
• RTV (Room Temperature Vulcanization)
• Adheres to many substrates
• Wide temperature range performance
• 50-year durability
• Can be applied in sub-zero temperatures

Bonds to:

• Metal
• Laminates
• Glass
• Wood
• Silicone resin
• Vulcanized silicone rubber
• Ceramic
• Natural and synthetic fibres
• Painted surfaces
• Most plastics

Basic uses include caulking and sealing around:

• Form-in place gaskets where there is no oil contact
• Duct joints
• Areas that need weather stripping
• Sinks, basins, showers, and tubs

Other uses include:

• General repairs on a variety of substrates
• Non-load-bearing bonding
• Non-stick coating for concrete moulds and forms

Specifications:

• Specific Gravity: 1.01 g/mL
• Extrusion Rate (3.2 mm orifice, 90 psi): 400 g/min
• Flow Rate: Nil, non- sag
• Tack free time (min) (25C, 50% RH): 10-20
• ASTM C 611 – Durometer Hardness, Shore A: 25
• ASTM D 412 Die C – Tensile Strength, MPa (psi): 2.25 (325)
• ASTM D 412 Die C – Elongation: 550%
• ASTM D 746 – Brittle Point: -62 C
• ASTM S 2137 A – Volume Coefficient of Thermal Expansion: 0 to 100C 9.3 x 104
• Thermal Conductivity, Cal/(s)(C)(cm): 4.5 x 104
• ASTM D 257 – Volume Resistivity, OHM-cm: 1.5×1015
• ASTM D 149 – Dielectric Strength: 21.7 kV/mm (550 V/mil)
• ASTM D 150 – Dielectric Constant at 60 Hz, 100 Hz, and 100 kHz: 2.8
• ASTM D 150 – Dissipation Factor at 60 Hz, 100 Hz, and 100 kHz: 0.0015
• ASTM C 603 – Application Temperature: -29 – 50 C
• ASTM C 1299 – Service Temperature: -51 – 230 C

* All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement.