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Screw Pump Piston Ring Bushing

Screw Pump Piston Ring Bushing

Suitable for Elma VDP70–VDP2800

The piston ring bushing is a stationary, cylindrical component with exceptionally high precision in its inner bore machining. It is press-fitted or secured within the shaft hole of either the vacuum pump’s pump body or end cover, ensuring a tight seal between the rotating shaft and the stationary pump housing.

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(Air-cooled) Roots Pump Piston Ring Bushing

(Air-cooled) Roots Pump Piston Ring Bushing

Suitable for Elam ZJ/ZJQ70-20000

The piston ring bushing is a stationary, cylindrical component with exceptionally high precision in its inner bore machining. It is press-fitted or secured within the shaft hole of either the vacuum pump’s pump body or end cover, ensuring a tight seal between the rotating shaft and the stationary pump housing.

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Screw Pump Piston Ring Seal

Screw Pump Piston Ring Seal

Suitable for Elma VDP70–VDP2800

A set of complementary seals consisting of piston rings and piston ring seats. The piston ring seat is securely mounted on the rotating shaft, while the piston rings are precisely fitted into grooves within the seat. Thanks to their inherent tension, they maintain a tight seal against the pump housing walls, ensuring efficient sealing even during rotational motion.

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(Air-cooled) Roots Pump Piston Ring Seal

(Air-cooled) Roots Pump Piston Ring Seal

Suitable for Elma ZJ/ZJQ70-VDP2800

A set of complementary seals consisting of piston rings and piston ring seats. The piston ring seat is securely mounted on the rotating shaft, while the piston rings are precisely fitted into grooves within the seat. Thanks to their inherent tension, they maintain a tight seal against the pump housing walls, ensuring efficient sealing even during rotational motion.

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(Air-cooled) Roots Pump Cooling Coil

(Air-cooled) Roots Pump Cooling Coil

Suitable for Elam ZJ/ZJQ70-20000

A set of metal pipes installed in the front and rear covers of the Roots pump removes the significant heat generated during operation by circulating cooling water (or another cooling medium) internally.

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Mechanical Seal

Mechanical Seal

A sealing component designed to prevent medium leakage and maintain vacuum integrity.

Achieving near-zero leakage dynamic sealing through a pair of precision, high-speed, counter-rotating flat surfaces that fit together with micrometer-level accuracy is one of the core components ensuring the pump operates efficiently and reliably.

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Rotary Pump Front and Rear Covers

Rotary Pump Front and Rear Covers

Suitable for Elma ZJ70-ZJ20000

The front and rear covers specifically designed for the Elmo Roth ZJ70–ZJ20000 series vacuum pumps are crafted from high-strength cast iron and precisely machined on advanced, high-precision machining centers. This ensures exact dimensions, reliable performance, and exceptional durability, ultimately supporting customers' stable production processes.

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Front and Rear Covers for Air-Cooled Roots Pump

Front and Rear Covers for Air-Cooled Roots Pump

Suitable for Elma ZJQ150-ZJQ20000

The front and rear covers specifically designed for the Elmo air-cooled Roots vacuum pump ZJQ150-ZJQ20000 series are made from high-strength cast iron and precisely machined using a high-precision machining center. This ensures accurate dimensions, reliable performance, and exceptional durability, ultimately supporting customers' stable production processes.

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Screw Vacuum Pump Front Cover

Screw Vacuum Pump Front Cover

Suitable for Elma VDP70–VDP2800

The front and rear covers specifically designed for the Elmo screw vacuum pump VDP70–VDP2800 series are made from high-strength cast iron and precisely machined on advanced, high-precision machining centers. This ensures exact dimensions, reliable performance, and exceptional durability, ultimately supporting customers' stable production processes.

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Roots Pump End Cover

Roots Pump End Cover

Suitable for Elma ZJ70-ZJ20000

Suitable for the entire ELM ZJ70 to ZJ20000 series Roots vacuum pumps, this product features high-strength cast iron (HT250), offering exceptional mechanical performance as well as superior wear and corrosion resistance. Machined in a single setup using a high-precision CNC machining center, it ensures that critical components—such as sealing surfaces and bearing bores—meet exacting design specifications for dimensional accuracy, geometric tolerances, and surface finish.

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Screw Pump End Cover

Screw Pump End Cover

Suitable for Elma VDP20–VDP2800

Suitable for the entire series of Elmo VDP70 to VDP2800 Roots vacuum pumps, this product features high-strength cast iron (HT250), offering exceptional mechanical performance as well as superior wear and corrosion resistance. Machined in a single setup using a high-precision CNC machining center, it ensures that critical components—such as sealing surfaces and bearing bores—meet exacting design specifications for dimensional accuracy, geometric tolerances, and surface finish.

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Air-cooled Roots pump end cover

Air-cooled Roots pump end cover

Suitable for Elma ZJQ150-ZJQ20000

Suitable for the entire series of Roots vacuum pumps from Elmo ZJQ70 to ZJQ20000, featuring high-strength cast iron (HT250) with exceptional mechanical properties, as well as superior wear and corrosion resistance. Machined in a single setup using a high-precision CNC machining center, ensuring that critical dimensions—such as sealing surfaces and bearing bores—as well as geometric tolerances and surface finish, meet exacting design specifications.

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