High precision filtering material effectively intercepts oil mist, dust impurities, and purifies exhaust gases Fine layered filter material structure, high filtration efficiency, not easy to block, smooth ventilation Compatible with multiple mainstream vacuum pumps, standard size, directly replace the original filter element Resistant to oil and gas corrosion, not easily damaged or swollen due to long-term contact with vacuum pump oil Dustproof and moisture-proof, stable internal filter paper structure, high-strength suction negative pressure will not break through