140mL porosity C (25-50 micron) Rusek funnel body used for drying air-sensitive compounds with inert gas, or a simple pressure filter funnel. O-ring joint connects the cap to the body to give a larger opening. Rusek funnel will withstand pressures of 20psi as supplied, but NO warranty, expressed or implied. Cap adapter has serrated hose connection for pressure source, usually a rubber bulb. O-ring joint on cap matches the funnel body joint, and secures with a pinch clamp. Pinch clamp and rubber bulb sold separately.