200-Piece Rubber Wire Grommet Assortment Kit Single-Sided Cable Protection Rings with Storage Box

Specifications:

• Material: Flexible, high-grade synthetic rubber
• Assortment Size: 200 Pieces
• Grommet Type: Single-Sided (Blind hole / Open hole style)
• Outer Diameters: Varies by size 
• Panel Groove Thickness: 1.5mm to 2mm
• Operating Temperature Range: -20°C to +80°C
• Packaging: Transparent compartmentalized organizer case with color-coded sizing label

Minimum hardware to get started:

• Step Drill Bit or Hole Saw : to create the precise diameter hole in your panel matching the grommet's outer groove.
• Metal File or Deburring Tool : to remove sharp burrs from the drilled hole before inserting the rubber grommet, ensuring it seats flush without tearing.
• Enclosure (Metal, Plastic, or Acrylic) : the housing you are passing wires into.

Safety Warnings:

• Pinch/Cut Hazard: Always deburr freshly drilled metal holes before attempting to push the rubber grommet into place.
• Sizing Warning: Do not force a thick cable through a grommet that is too small; the friction can tear the rubber or pull it out of the panel groove.

Accessories
Included in the Box:

• 200× Assorted Single-Sided Rubber Wire Grommets (Various Sizes)
• 1× Compartmentalized Storage Case with Sizing Label

Frequently Asked Questions

• Are these grommets compatible with metal enclosures?
  Yes, they are specifically designed to protect wires passing through drilled holes in metal, aluminum, and steel panels.
• Can I use them with acrylic or 3D printed plastic cases?
  Absolutely, the rubber will seat perfectly in any rigid material as long as the panel thickness is between 1.5mm and 2mm.
• Does this kit include sizes compatible with standard AC power cables?
  Yes, the larger diameters (10mm and 12mm) in this assortment are wide enough to accommodate standard 3-core AC mains cables.
• Can I route multiple jumper wires through a single grommet?
  Yes, you can pass a bundle of thin wires through one grommet, though wrapping them in heat shrink first makes insertion much easier.
• Does the rubber material provide voltage isolation?
  Yes, the synthetic rubber is an excellent electrical insulator and will prevent your live wires from shorting against a conductive metal chassis.
• Can these handle the heat from high-current power cables?
  The rubber is rated for operating temperatures up to +80°C, making it safe for typical DC and AC power wiring in hobbyist projects.
• Is this material fireproof or self-extinguishing?
  While it handles standard operating heat well, it is not strictly rated as a self-extinguishing material for high-voltage industrial fire-safety compliance.
• How do I properly route a wire through the grommet?
  Install the grommet into the panel hole first, then gently push your pre-stripped or bundled cable through the center opening.
• Do I need a special tool to install these into the panel?
  No special tools are required; they can be squeezed and popped into the drilled hole by hand or with the gentle help of a blunt flathead screwdriver.
• Can I use these for routing pneumatic air tubing instead of wiring?
  Yes, these grommets work perfectly to protect silicone or polyurethane air hoses from chafing against sharp panel edges.
• Are there 3D CAD libraries available for these grommets?
  Yes, standard single-sided grommet profiles are widely available in most mechanical CAD libraries like Fusion 360 or SolidWorks.
• Does using these meet electrical code for DIY enclosures?
  Using rubber grommets is a standard best practice for strain relief and wire protection in custom electronics, though local mains voltage codes may vary.
• Where can I find the exact dimensional drawing for each size?
  The included compartmentalized box features a color-coded label that outlines the specific inner and outer diameter for every piece in the assortment.