It are designed for efficient and space-saving connection of capillary tubing and air valves in laboratory applications. Made from high-quality PPS with a flat, freely movable PTFE insert, these caps provide excellent chemical resistance and durability. The lateral connections are positioned at a 90° angle to the bottle thread, making them ideal for compact laboratory setups. Designed for capillary tubing with an outer diameter of 3.2 mm, they also accommodate b.safe air valves with a service life indicator for safe solvent handling.