Conical natural grey rubber stoppers with one hole.

• Resistant to common laboratory chemicals
• Highly elastic, for a perfect seal and exceptional bonding
• With pre-drilled holes
• Withstands temperatures from −25 to +70 °C (+120 °C in humid atmosphere)
• Hardness (shore durometer A): 40

Withstands temperatures from -25 to +70 °C (+120 °C in moist heat)

Hardness (Shore durometer A): 40

DIN 12871