BD Engineering Mechanical Seal

BD Series High-Performance Piston Rod Seals | Dual-Lip Hydraulic Cylinder Seal Solutions

Meet the BD Series Piston Rod Seal—an innovative dual-lip design engineered to outperform conventional hydraulic cylinder rod seals in extreme environments. Featuring two precision-molded sealing lips and an integrated anti-extrusion ring, this advanced rod seal minimizes dry friction by retaining a consistent lubrication film within the sealing gap. Ideal for mobile machinery and high-pressure static systems, the BD series replaces costly tandem seal setups with a single, robust unit. Its bidirectional lip structure ensures reliable zero-pressure sealing, prevents external contamination ingress, and withstands shock loads up to 500 bar—making it the ultimate choice for applications where standard rubber or fabric-reinforced seals fail.

Technical Superiority & Key Specifications
Optimized for durability and precision, the BD Hydraulic Cylinder Rod Seal delivers:

• Pressure Range: ≤500 bar (7,252 psi)

• Temperature Resistance: -35°C to +110°C

• Surface Speed: ≤0.5 m/s (19.7 in/s)

• Material: 93 Shore imported polyurethane lips + 70 Shore NBR anti-extrusion ring

• Media Compatibility: Hydraulic oils (mineral-based)

• Critical Advantages: 40% lower wear rates vs. single-lip designs, near-zero compression deformation, and exceptional extrusion resistance.

Engineered for Demanding Industrial Applications
The BD Piston Rod Seal thrives in harsh conditions where reliability is non-negotiable. Its dual-lip architecture creates a self-lubricating pressure zone between the lips, reducing heat buildup and micro-leakage risks during rapid pressure changes. Tested in construction excavators, forestry equipment, and precision hydraulic presses, this seal excels in preventing air ingress, maintaining seal integrity during cold starts (-35°C), and resisting abrasive particles. Unlike traditional tandem configurations, the BD series simplifies installation while offering 2x service life in high-cycle machinery.

Installation Guidelines for Peak Performance
To ensure optimal functionality:

1. Axial Clearance: Follow H/L column values from sizing tables—critical for thermal expansion management.

2. Groove Design: Install into closed grooves; avoid open grooves for large diameters without professional guidance.

3. Handling: Never drag seals over sharp edges—use installation cones or protective sleeves.

4. Pairing: Combine with hardened/polished piston rods (surface roughness Ra ≤0.2μm recommended).

Upgrade to the BD Series Rod Seals for unmatched pressure tolerance, bidirectional reliability, and cost efficiency. Request free CAD models or on-site failure diagnostics today!