Heng’s Nu Flex 302 white silicone caulk is a 100 percent RTV (room temperature vulcanization) sealant approved by NSF for general-purpose sealing applications. The acetoxy formulation resists sagging on overhead and vertical surfaces, providing a neat white finish that matches most RV exteriors.

This single-component caulk bonds to metal, glass, wood, ceramics, and most plastics. Once cured, it forms a permanently flexible, rubbery solid that withstands temperature extremes, UV exposure, and vibration for long-lasting performance.

• 10 oz cartridge size
• NSF approved
• Adheres to multiple substrates
• Resists temperature extremes and UV
• Permanently flexible after curing
• Not paintable