PTFE Coasters: 50mm x5mm Nonstick (comparatively), resistant to temperatures up to 500F, and immune to almost all chemicals. In short, they're the right stuff for dab coasters- a step above silicone.
We had not realized the range of quality in PTFE manufacturing when we started this, and having seen samples from all across the globe, our domestic supplier with their 60+ years of experience really stand out. From raw material to finished polish, these are produced to the same standards of critical medical and scientific components.