VFI®-3140 40 A MDI Fast Molding Rubber

VFI®-3140 40 A MDI Fast Molding Rubber is a 40 A hardness, urethane rubber that provides high durability and flexibility with a shortened demold time. With the ability to maintain a thin viscosity long into its pot life, VFI-3140 allows for intricate parts to be poured with consistently thin material and large parts to be poured quickly. Maintaining a low viscosity allows VFI-3140 Fast Molding Rubber to dissipate air bubbles with and without vacuum degassing depending on application.

40 A MDI mold making rubber with a quick demold time and a low viscosity.

Features & Benefits

  • Ideal for Limited Run Production Molds and Rubber Prototype Parts
  • Highly Durable Urethane Rubber with Great Rebound and Versatility
  • Ultra-Easy 1A:1B Formulation Helps to Eliminate Costly Off-Ratio Mixes
  • Economical Alternative to High Amine Based Rubbers (VFI-176)
  • Room Temperature Cure Without the Need for Post Curing
  • Fast Setting for Quicker Demold Times to Increase Part Production Rates
  • Low Viscosity Allows for Increased Part Sizes while Maintaining Final Properties
  • Additional MDI Rubber Speed Variations and Hardness's are Available
  • Hand Pouring and Injection Application Methods are Acceptable
  • Ready When You Need Us! Full Production Facility with Continual Batching

Application Methods:

  • Inject
  • Pour

Available Packaging:

  • Tote
  • Drum
  • 5 Gallon
  • 1 Gallon

Physical Properties

  • Hardness Shore A: 40
  • Hardness Shore D: n/a
  • Tensile Strength: 445 psi
  • Elongation: 780.00%
  • Tear Strength: 45 pli
  • Solid Material Density: 26.37 (in3/lb)
  • Dimensional Stability: <0.001%

Liquid Properties

  • Solids by Weight: 100.00%
  • Solids by Volume: 100.00%
  • Liquid Density A Side: 8.85 lbs/gal
  • Liquid Density B Side: 8.65 lbs/gal
  • Mixed Liquid Density: 8.75 lbs/gal
  • Specific Gravity A Side: 1.06 g/ml
  • Specific Gravity B Side: 1.04 g/ml
  • Specific Gravity Mixed: 1.05 g/ml
  • Ratio by Volume (A:B): 1A:1B
  • Ratio by Weight (A:B): 100 A : 97.8 B
  • Solids by Volume A Side: 100.00%
  • Solids by Volume B Side: 100.00%
  • Mixed Solids By Volume: 100.00%
  • Viscosity A Side: 3500 cps
  • Viscosity B Side: 1300 cps
  • Mixed Viscosity: 2300 cps
  • Pot Life: 8 min
  • De-mold Time: 4 hours

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