Both sides can be used. Provide a safe stand for round bottom flasks.
- Very soft and easy to clean.
- Resistant to chemicals.
- Good thermal and electrical insulation.
- Excellent adhesion to glass.
- Non-slip.
Available in 2 qualities:
- Rubber, black.
- Silicone elastomer, blue, oxidation-resistant, temperature-resistant from - 60 to + 200 °C.