Infinity Bond POLYFILL 4000 Ultra Lightweight Marine Polyester Putty

Lightweight Marine Putty for Hardtop Bonding & Composite Boat Assembly Infinity Bond POLYFILL 4000 is an ultra lightweight polyester marine putty engineered for hardtop bonding, sandwich panel assembly, and lightweight composite boat construction applications where reducing overall part weight and maintaining controlled processing performance are critical. Its low exotherm formula flows evenly under moderate clamping pressure while maintaining dependable hold during assembly and mold repositioning. Designed for efficient marine production workflows, POLYFILL 4000 pumps and trowels easily for reliable processing in lightweight bonding, fiberglass assembly, and composite marine fabrication applications requiring smooth application characteristics and consistent bonding performance.Lightweight Performance Benefits of POLYFILL 4000 Polyester Putty Ultra Lightweight Formula: Weighs less than 5 lbs per gallon to help reduce overall assembly weight Hardtop & Sandwich Assembly Performance: Designed for lightweight marine bonding and composite fabrication applications Controlled Clamping Flow: Flows evenly under moderate clamping pressure for consistent material distribution Smooth Processing Characteristics: Pumps and trowels easily in marine production environments Reliable Assembly Stability: Maintains position during assembly and mold repositioning operations Low Exotherm Cure Properties: Helps reduce heat buildup during curing for more consistent processing results Versatile Viscosity Availability: Offered in higher viscosity formulations for controlled flow and damming applications Specifications Series: POLYFILL 4000 Type: Marine Putty Chemistry: Polyester Liquid Adhesive Gel Time: 28 Minutes Reaction Time: 45 Minutes Fixture Time: 73 Minutes Viscosity: 50,000 - 65,000 cps @ 2 RPM 18,000 - 28,000 cps @ 20 RPM Peak Exotherm: 150°F (65.6°C) Color: White Odor: Styrene Texture: Smooth Weight: 4.6 lbs/gallon Tensile Elongation: 8.2% Tensile Strength: 1,060 psi Flexural Strength: 6,960 psi Flexural Modulus: 357,000 psi Compressive Strength: 1,910 psi Lap Shear: 1,100 psi Heat Deflection: 150°F (65.6°C) Shore D Hardness: 40 - 50 Package Size: 5-Gallon Pails Shelf Life: 3 Months Note: Typical physical properties @ 75°F (24°C). Common Applications Hardtop bonding and boat assembly applications Lightweight sandwich bonding operations Small composite marine part assembly Hand-laid fiberglass fabrication environments Lightweight marine bonding applications Controlled flow and clamping assembly operations Damming and material control applications