VFI®-1678 80 D Injectable Plastic

VFI®-1678 80 D Injectable Plastic

VFI-1678 80 D Injectable Plastic is a fast-setting, highly durable urethane plastic with a quick demold time to increase part production rates. With a good viscosity for injecting, this material is able to fill molds with little to no air entrapment during the manufacturing process. A high amine content provides the plastic with good temperature stability and chemical resistance, allowing it to be used in a variety of industrial part-making and prototyping applications. Depending on need, VFI-1678 can produce a smooth, glossy or matte finish that is fully paintable when primed or sanded.

VFI-1678 80 D Injectable Plastic from VFI is a fast-setting, highly durable, injectable urethane plastic for making strong industrial parts and prototypes.

Features & Benefits

  • Superior physical properties ideal for industrial part-making and prototyping
  • High amine content offers good temperature stability and chemical resistance
  • Ultra-easy 1:1 mix ratio for consistent injection, eliminating costly off-ratio mixes
  • Room temperature cure, eliminating the need for post curing
  • Fast setting for quicker demold to increase part production
  • Fully cured castings are tough, durable, and easily paintable

Instructions for Use:

Mold Preparation

The molding surface should be clean and free of oil, dirt, or debris. Seal and release any porous surfaces. A release agent should be used for demolding and to extend the life of the mold. You may heat the mold between 70°F-150°F before injecting for a quicker demold. However, heating above 72°F will also shorten the pot life of the material. Compatible molds include urethane, metal, and platinum silicone when properly prepared.

Molding Process

The material should be brought to a minimum temperature of 65°F before use. Premix the B side material (Poly) until uniform. With a short pot life, the recommended application method is to inject the material. A proportioner is required to inject the material into a mold. There is not enough time to vacuum degas the material.

VFI-1678 does not have a thickness limit, but if the injected part exceeds 5 pounds, we recommend using a different material with a longer working time. The casting can be demolded after 5 minutes at room temperature if injected greater than 125 mils thick or 10 minutes if less than 125 mils. Thinner sections or parts may require a longer cure time in the mold. After demolding, allow the material to fully cure at room temperature outside the mold for at least 16 hours. Full physical properties can be achieved in 7 days without post-curing.


*Always read the safety data sheet before working with chemicals

Use chemicals only as directed and for their intended purpose. Do not dispose of chemicals down the drain. Most chemicals must be disposed of as hazardous waste.

PPE to avoid all unnecessary exposure:

  • Eye protection – wear approved safety glasses and any additional eye protection as necessary
  • Hand protection – wear chemically resistant protective gloves (nitrile, butyl, or neoprene)
  • Body protection – wear suitable protective clothing
  • Respiratory protection – in case of insufficient ventilation, wear suitable respiratory equipment. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product, and the safe working limits of the selected respirator

Product Limitations

VFI-1678 contains isocyanate that may irritate the skin and is toxic when inhaled as particulate matter. Avoid prolonged breathing of vapors and repeated skin contact. This product is not UV color stable and has no long-term UV testing. For complete UV stability, it will require a UV stable topcoat.

  • Incompatible materials – A side: strong bases, acids, alcohols, amines, and water. B side: strong oxidizers, strong acids, and strong bases
  • Conditions to avoid – heat and incompatible materials
  • Chemical stability – stable under normal storage conditions
  • Reactivity & hazardous reactions – no dangerous reaction known under normal use
  • Hazardous decomposition products – may include, and are not limited to, oxides of carbon as well as oxides of nitrogen and isocyanates for the A side

Potential Health Hazards

  • May cause respiratory tract irritation. A side material may also cause allergy and asthma symptoms or breathing difficulties if inhaled.
  • Causes skin irritation or sensitization: redness, edema, drying, defatting, and cracking of the skin.
  • Causes serious eye irritation: discomfort, pain, excess blinking and tear production, marked redness, and swelling of the conjunctiva. B side material may also cause burns.
  • May cause stomach distress, nausea, or vomiting if swallowed.

*If you are experiencing any of these symptoms, seek medical advice or attention. Call a poison control center or doctor if swallowed.

Application Methods:

  • Inject Inject

Available Packaging:

  • Tote
  • Drum
  • 5 Gallon
  • 1 Gallon