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Rubicon Diamond -sicRubicon Diamond -sic

Rubicon 50mm Diamond Plugs

$90.00$120.00 inc GST

Arrow, Rectangle and PCD Diamond Plugs

For PCD Plugs, select ‘N/A’ for the options that follow. See our product description for which Shape, Bond and Grit may be right for your project.

SKU: C63966 Categories: ,

Rubicon 50mm Diamond Plugs are available in three shapes: rectangle, arrow and PCD. Engineered with precision and durability, these plugs are crafted to excel in a variety of grinding applications. 


Which diamond grinding plugs should be used on your floor?

Every project and floor is different which is why diamond flooring plugs come in different shapes, bonds and grits.


Diamond Grinding Plug Shapes

  • Rectangle: Best for uncoated/bare concrete
  • Arrow: Ideal for floors with clear and other light coatings
  • PCD: Recommended for surfaces with tough adhesives, heavy coatings and other difficult materials


Concrete Floor Grinding Plug Bonds

  • Extra Soft: Recommended for hard concrete typically characterised by high compressive strength, low porosity, and a dense, durable surface; i.e. hard burnt slabs and flat pan finishes
  • Medium: Recommded for medium concrete typically has characteristics and strength that fall between soft and hard concrete
  • Hard: Recommended for soft concrete typically has lower compressive strength, higher porosity, and less density; i.e. rain damaged slabs and abrasive surfaces


Diamond Flooring Grinding Plug Grits

  • 80 grit: Used for polishing concrete where a clear coating will be applied
  • 30/40 grit: Used to prepare, most substrates, for a variety of floor coating applications
  • 16 grit: Used when a more aggressive grind is needed for preparation or for grinding down to exposed aggregate


Note: Every surface is different, it is always recommended to test your floor to determine the best product for your project. Please feel free to contact us for further assistance in determining your project needs.


Safety and Usage Tips:

  • Always wear appropriate safety gear during operation.
  • Ensure proper installation and alignment of the diamond plugs.
  • Follow Rubicon’s guidelines for optimal performance and safety.

Rubicon 50mm Diamond Plugs are your reliable choice for precision grinding tasks. Whether you’re a professional craftsman or a DIY enthusiast, these plugs will meet your needs with exceptional quality and performance. Elevate your Diamond Floor Grinding experience with Rubicon Floor Grinding Diamonds.


***Please note: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.***


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Hard concrete is typically characterized by high compressive strength, low porosity, and a dense, durable surface. Examples of hard concrete surfaces include:

  1. High-Strength Concrete: This concrete has a high compressive strength (often over 6000 psi) and is used in structures requiring high durability and load-bearing capacity.
  2. Densified Concrete: Concrete that has been treated with a densifier, which chemically reacts with the concrete to fill in pores and increase surface hardness.
  3. Older, Cured Concrete: Concrete that has been curing for a long time tends to become harder over time as the hydration process completes and the material becomes denser.
  4. Concrete with Low Water-Cement Ratio: Concrete mixes with a lower water-cement ratio tend to be harder due to the reduced porosity and higher density.
  5. Industrial and Commercial Floors: Floors subjected to heavy machinery, high foot traffic, or chemical exposure often use harder concrete mixes for increased durability and longevity.

Soft concrete refers to concrete with lower compressive strength, higher porosity, and less density compared to medium or hard concrete. Examples of soft concrete surfaces include:

  1. Freshly Poured Concrete: Before it has fully cured and gained strength, freshly poured concrete remains relatively soft and can be easily scratched or damaged.
  2. Low-Strength Concrete: Concrete with lower compressive strength, often below 3000 psi, typically used in non-structural applications where high strength is not a critical requirement.
  3. Lightweight Concrete: Made with lightweight aggregates, this type of concrete has lower density and strength, used in applications such as soundproofing, fireproofing, and insulation.
  4. Porous Concrete: Concrete designed to be permeable for applications like pervious pavements, which allow water to pass through. The increased porosity results in lower strength and a softer surface.
  5. Foam Concrete: Also known as cellular concrete, this lightweight concrete contains foam to reduce density and strength, used for void filling, thermal insulation, and lightweight construction.
  6. Old, Degraded Concrete: Concrete that has deteriorated over time due to exposure to weather, chemicals, or physical wear, leading to a softer and more crumbly surface.

Medium concrete refers to concrete with characteristics and strength that fall between soft and hard concrete. Examples of medium concrete surfaces include:

  1. Standard Commercial Concrete: Commonly used in commercial buildings and structures where the loads and traffic are moderate, with compressive strengths typically between 3000 and 5000 psi.
  2. Residential Concrete Floors: Often used in homes for slabs, driveways, and patios, which do not require the extreme hardness of industrial floors but still need to be durable.
  3. General-Purpose Concrete: Used in a wide range of applications, from sidewalks to parking lots, where the concrete needs to withstand regular use without the extreme demands placed on industrial or high-strength concrete.
  4. Concrete with Moderate Water-Cement Ratio: Mixes that balance workability and strength, providing a good compromise between durability and ease of placement.
  5. Newer, Well-Cured Concrete: Concrete that has been allowed to cure properly but is not yet extremely old or densified, maintaining a medium level of hardness.

Colour accuracy disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.

Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.

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