It is a versatile and durable screw cap designed for secure laboratory use. It features a freely movable PTFE insert that ensures reliable sealing and easy connection of capillaries and hoses. Made from high-quality PE (Polyethylene), this waste cap includes four capillary connections (for tubing with outer diameters of 1.6, 2.2, and 3.2 mm), a GL14 thread for an optional b.safe exhaust air filter (filter not included), and one hose connection (NPT 1/8") suitable for tubing with an inner diameter of 5.5 to 8 mm. The B53 thread ensures compatibility with a wide range of solvent storage and handling containers, providing a secure and leak-proof solution for laboratory waste management.