PP, white, with platinum cured silicone inserts.

• Very good chemical resistance, heat resistant up to +135 °C, autoclavable
• The Top Works™ system includes versions with solid, two or three port connections
• Suitable for use in the aseptic transfer of liquids from most Nalgene® bottles and carboys

Platinum cured silicone tubing is fused through the stopper to form a single piece closure system.