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Ultimate Guide to The Construction Materials for THC Cartridge

Ultimate Guide to The Construction Materials for THC Cartridge

As the cannabis industry continues to thrive, the popularity of THC (tetrahydrocannabinol) cartridges has skyrocketed. These cartridges provide a convenient and discreet way to consume cannabis concentrates, making them a preferred choice for many enthusiasts. One crucial aspect of a high-quality THC cartridge is its construction materials.

In this ultimate guide, we will delve into the various materials used in the manufacturing process, their properties, and their impact on the overall cartridge experience.

THC Cartridge Construction

The main parts of a THC cartridge are construction with the mouthpiece, oil tank, center tube, coil, and 510-thread base.

Mouthpiece – where your lips suck out the cannabis vapor

Oil Tanks – store cannabis oil

Central tube – the channel through the cannabis vapor

Coil – heats cannabis oil and evaporates it into vapor

510-thread base–connect 510 vape mod battery or 510 vape pen

THC Cartridge construction
THC Cartridge construction

Mouthpiece Materials

The mouthpiece is the part of the cartridge from which the vapor is inhaled. Common materials used for mouthpieces include:

a. Ceramic: Ceramic mouthpieces are favored for their heat resistance and ability to deliver clean, flavorful hits. They are non-reactive and do not alter the taste of the THC oil.

b. Plastic: Many cartridges have plastic mouthpieces, as they are cost-effective and widely available. While they are lightweight and inexpensive, they may not offer the same level of durability and heat resistance as other materials. It is crucial to choose cartridges made from safe, food-grade plastics to avoid potential health risks.

c. Metal: Metal mouthpieces, typically stainless steel, are known for their durability and sleek appearance. They are easy to clean and maintain, but some users find them less comfortable due to their temperature conductivity.

Cartridge Oil Tank Materials

The outer shell or housing of a THC cartridge is typically made of one of the following materials:

a. Glass: Glass cartridges offer excellent visibility, allowing users to see the remaining oil level. They are also non-reactive, which means they won’t affect the taste or quality of the THC oil. Glass cartridges are favored for their durability and resistance to high temperatures.

b. PCTG Plastic: Some cartridge oil tanks feature PCTG material, which tends to be more affordable than glass. PCTG tank can stand the thermal shock and the THC oil will not deteriorate under heat. In terms of visibility, PCTG is considered to own high clearness.

Coil Materials

The coil inside a THC cartridge is responsible for heating the cannabis concentrate and vaporizing it for inhalation. Cartridge coil is mostly comprised of either cotton wicks or ceramic wicks.

a. Cotton wick: Cotton wick refers to the heating coil wrapped with cotton, and the material of the heating wire is mostly composed of nickel-chromium alloy and iron-chromium alloy (there is also 316L for temperature control).

The cotton wick is saturated with THC oil and then heated by the heating wire. The disadvantage of this kind of heating core is that it is easy to burn out the wick under continuous high temperatures, especially when using viscous oil or high voltage.

b. Ceramic wick: The ceramic wick is a ceramic wrapped heating coil. The ceramic material is alumina (usually only alumina is used for ceramic heating coils). The material of the heating wire is the same as that of the cotton core.

Ceramic wicks are gaining popularity due to their ability to deliver clean and pure flavors. They are known for their high heat resistance and durability. Ceramic wicks also offer better absorption and can handle a range of cannabis oil viscosities.

Central Tube Material

The central tube in a THC cartridge serves as a pathway for airflow and vapor transport. It is a hollow tube that runs through the center of the cartridge, connecting the coil at the bottom to the mouthpiece at the top. The central tube is designed to ensure efficient vaporization and inhalation of the cannabis concentrate.

Here are two commonly used materials:

a.316 Stainless Steel:

316 stainless steel, also called SUS 316L Stainless Steel: SUS 316L is a grade of stainless steel commonly used to construct central tubes.  

Stainless steel central tubes offer durability, strength, and resistance to corrosion.  They are compatible with various cannabis concentrates and can handle high temperatures generated by the coil.  Stainless steel central tubes are often preferred for their longevity and cheap price.

b. Ceramic

Ceramic central tubes are becoming more prevalent in high-end THC cartridges. Ceramics is known for its heat resistance, durability, and ability to provide a clean and pure flavor.

Ceramic tubes can contribute to a smoother vaping experience and are often preferred by enthusiasts who prioritize flavor quality.

316 stainless tube vs ceramic tube
SUS 316L Tube VS Ceramic Tube

c. No central tube cartridge

“No Central Tube” THC Cartridge, also called postless cartridge. It’s a game-changer in vaping technology. With its unique design eliminating the central tube, this cartridge delivers unparalleled airflow, ensuring smooth and flavorful hits. Experience the full potential of your THC concentrates with our innovative and high-performance cartridge.

Postless Cartridge-Vibe Solo

Additional Considerations

Testing and Certification: When bulk purchasing THC cartridges, it’s crucial to look for products that have undergone rigorous testing and certification processes.

Reputable manufacturers often provide lab test results for their cartridges, ensuring that they meet safety standards and no heavy metal. This information can help you make an informed decision and ensure that you are consuming a high-quality product.

Proper Usage and Maintenance: To maximize the lifespan and performance of your THC cartridge, it’s essential to follow the manufacturer’s instructions for usage and maintenance.

Do not fill the oil tank with too full. Avoid exposing cartridges to extreme temperatures, excessive moisture, or direct sunlight. Proper handling and storage will help ensure a consistent and enjoyable vaping experience.


Selecting the right construction materials for THC cartridges is essential to ensure a safe and enjoyable vaping experience.

Glass or high-quality plastic housing, ceramic or stainless-steel coils, and safe wick and mouthpiece materials are crucial factors to consider. Remember to purchase cartridges from reputable manufacturers who prioritize quality and use safe materials.

By understanding the construction materials used in THC cartridges, you can make informed choices and enhance your overall vaping experience while enjoying the benefits of cannabis concentrates responsibly.