Biohazard Trefoil Rings black outline icon
Biohazard trefoil made of three interlocking rings around a small spoked center
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About the Biohazard Trefoil Rings black outline icon
Three interlocking rings arranged around a small central circle form the standard biohazard trefoil, with short spokes radiating from the middle. It warns of infectious material, biological contamination and hazardous medical waste. Use it on laboratory doors, sharps and specimen containers, hospital or quarantine signage, chemical safety documents and epidemic awareness graphics.
The three arcs are rotationally symmetrical and left open at the outer edge, which gives the mark its familiar hooked profile. It pairs with radiation, toxic and flammable hazard icons in a safety set. Reproduce it at full contrast and avoid altering the shape, since it carries a regulated meaning.
This is the black outline version of the biohazard trefoil rings icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
Download it free as a scalable SVG vector or transparent-background PNG in seven sizes (16 to 512px), copy the SVG code straight into your project, or open it in the free online editor to change colors, apply gold, silver, neon and gradient styles, animate it, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
