
Kremer 3M™ Glass Bubbles K1 / S22 – Lightweight Glass Microspheres
Hollow borosilicate glass microspheres (microballoons) for lightweight fillers in resins, putties and mortars.
3M™ hollow glass microspheres (soda-lime-borosilicate glass) from Kremer Pigmente. A white, very light powder that drastically reduces the weight and shrinkage of fillers.
- K1: density approx. 0.125 g/cm³, mean diameter ~65 µm – maximum weight reduction
- S22: density approx. 0.22 g/cm³, mean diameter ~35 µm – higher crush strength
- Uses: filler for epoxy and acrylic resins (e.g. Paraloid B-72), lightweight fillers for ceramics, plaster and wood, adjusting texture and density of fills
- Chemically inert; insoluble in water or organic solvents
- Manufacturer/supplier: Kremer Pigmente GmbH & Co. KG (Germany)
Safety: Avoid inhaling the fine dust; use an FFP2 mask. Safety data sheet (SDS) available on request.
Made to order · imported from abroad. This product is ordered from the manufacturer. Import shipping costs may be added to the price; we confirm them by email before payment.
- You place the order online, without payment.
- We confirm prices, availability and shipping cost and send you the final amount.
- You pay by bank transfer and send the payment slip quoting the order number.
- Shipping by BOX NOW, ACS or freight carrier in Greece, FedEx or DHL abroad. You can see the tracking number in your account.
Public bodies follow their own procurement procedure. Request a quote.




