Vacuum/Pressure Rubber Bulb Without Tubing manufactured by Heathrow Scientific is made from synthetic rubbe. This heavy-wall bulb has two rubber valves with PVC connections.
Specification
Bulb Capacity: 85 mL Overall Dimensions: 5.39" L x 2.09" OD (137mm L x 53mm OD) Hole Diameter: 0.29" (7.4mm) Packaging: 1 Each