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R2 Piston Rod Seal - Asymmetric Double-Lip Design, High-Performance Polyurethane
Asymmetric Double-Lip Structure for Enhanced Leak Prevention
Designed for hydraulic and pneumatic cylinders, the R2 Piston Rod Seal boasts an asymmetric double-lip structure—ensuring tight leak-proof sealing and extra protection against contaminants. Crafted from high-performance polyurethane, it offers exceptional flexibility for easy installation, plus durability to withstand -45℃~+110℃ temperatures, 400bar max pressure, and ≤1m/s working speed.
Ideal for engineering machinery, injection molding equipment, and compatible with European, North American, and Asian standard cylinder sizes, it delivers stable, long-lasting performance. This precision-molded seal safeguards cylinder components, reduces maintenance needs, and boosts operational efficiency—making it a reliable choice for industrial sealing demands.
5.0
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1. Product Advantages
Superior Sealing Performance: Adopts an asymmetric double-lip design to eliminate leaks effectively, with the primary lip ensuring tight contact with the piston rod and the secondary lip blocking contaminants—reducing equipment failure risks by 30% compared to standard seals.
Durable Material: Made of high-grade polyurethane (PU) with excellent wear resistance and flexibility, enabling easy installation and maintaining stability in extreme temperatures (-45℃~+110℃) and high pressure (up to 400bar).
Wide Compatibility: Fits most European, North American, and Asian standard cylinder sizes, eliminating the need for custom modifications and cutting down procurement time.
Long Service Life: The precision-molded structure minimizes friction (working speed ≤1m/s), extending the seal’s lifespan to 2,000+ operating hours in typical industrial scenarios.
2. Working Principle
The R2 Piston Rod Seal operates via its dual-lip mechanism: When the cylinder is activated, the primary lip deforms slightly under pressure to form a tight seal against the rod, preventing hydraulic/pneumatic fluid leakage. The secondary lip acts as a barrier, blocking dust, debris, and moisture from entering the cylinder—protecting internal components and maintaining fluid cleanliness. The polyurethane material’s elasticity ensures consistent contact even with minor rod vibrations, ensuring stable performance.
3. Product Details
Structure: Asymmetric double-lip (primary + secondary lip) with a smooth, burr-free surface for reduced friction.
Dimensions: Covers standard sizes (e.g., rod diameters 10mm~200mm) with precise tolerances (±0.05mm) for perfect fit.
Material Grade: Premium Hythane®-equivalent PU, tested for resistance to mineral oil, hydraulic fluids, and mild chemicals.
Installation: Flexible design allows manual installation without special tools; compatible with standard seal grooves.
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4. Application Range
Ideal for:
Hydraulic cylinders (construction machinery: excavators, loaders; agricultural equipment: tractors)
Pneumatic cylinders (automation lines, packaging machines)
Industrial machinery (injection molding machines, metal processing equipment)
Mobile equipment (trucks, forklifts)
5. FAQ
Q1: What fluids is the R2 Seal compatible with?
A1: It works with mineral oil, petroleum-based hydraulic fluids, and dry pneumatic air. Avoid strong solvents (e.g., acetone) or acidic fluids.
Q2: Can it be used in low-temperature environments?
A2: Yes—its PU material maintains flexibility at -45℃, suitable for cold regions (e.g., northern construction sites).
Q3: How often should the seal be replaced?
A3: Under normal use (8-hour daily operation), replacement is recommended every 12~18 months; earlier if leaks or unusual noise occur.
6. Forever Seals Selling Points
20+ Years of Expertise: Specialized in industrial seals with ISO 9001 certification, ensuring consistent quality.
Custom Solutions: Offers tailor-made R2 Seal variants (e.g., high-temperature resistant grades) for unique customer needs.
Global Support: Provides 24/7 technical assistance and fast delivery (3~5 days for European/North American orders).
Eco-Friendly: Uses recyclable packaging and low-VOC materials, aligning with global sustainability standards.
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