Piston Cup

💎 Downhole Drilling Durable Polyurethane Piston Cups for Elephant BW-Series Pumps – Optimized for Sealing and Wear Life

The piston cup (often used in conjunction with a piston body in piston pumps like the BW-Series) is the primary sealing element that separates the drilling fluid from the pump mechanism. Its performance directly affects volumetric efficiency and prevents expensive fluid bypass. Our piston cups are engineered using premium, wear-resistant elastomers, most commonly high-quality Polyurethane, known for its superior resilience and abrasion resistance in heavy-duty applications. Designed specifically for the Elephant BW-Series bore size and pressure rating, these cups maintain an exceptional seal throughout the entire 135 mm stroke, maximizing mud flow and reducing the need for frequent fluid end maintenance.

Key Features & Benefits:

Optimized Sealing: The lip and body design provides a tight, low-friction seal against the liner, preventing fluid leakage and ensuring the pump achieves maximum rated volumetric efficiency.
Premium Material Options: Available primarily in High-Performance Polyurethane (ideal for water-based and non-corrosive oil-based muds) and sometimes specialized rubber compounds (for high-temperature or heavily oil-based muds).
Superior Abrasion Resistance: Polyurethane formulation resists the abrasive effects of sand, cuttings, and barite, drastically extending service life in challenging drilling environments.
Dimensional Accuracy: Manufactured to strict OD and ID tolerances to fit the specific bore size of the BW-Series liner (100 mm to 170 mm ID range, depending on configuration).
Reduced Operating Costs: Longer wear life means fewer replacements, less downtime, and a lower overall cost per meter drilled.

Elephant BW-Series Piston Cup Specifications

Parameter	Detail	Note/Standard
Part Name	Piston Cup (Piston Rubber / Piston Seal)	Used in the Piston Assembly (Piston Body + Cup).
Applicable Pump Model	Elephant (or equivalent) BW-Series	Fits the fluid end liner bore.
Standard Sizes (OD)	Available in various ODs	Must match the Liner ID (e.g.,100 mm, 130 mm, 150 mm, etc.).
Material (Most Common)	High-Performance Polyurethane	Excellent for abrasion and moderate temperatures.
Material (Alternative)	Buna-N, High-Nitrile Rubber, Specialty Polymers	For specific temperature, pressure, or oil resistance needs.
Maximum Operating Temp.	Varies by material (typically up to 90° C for PU)	Crucial for high-temperature drilling.
Max Pressure Rating	Designed to withstand BW-Series rated pressures (e.g., up to 8 MPa to 10 MPa depending on liner size).	Check pump specs for exact pressure rating.
Configuration	Single or Double Lip Design	Dependent on the piston body design.