High Pressure Piston Rod Seal Solutions by Polypac
High Pressure Piston Rod Seal — Reliable Sealing for Extreme Hydraulic Conditions
Overview of High Pressure Piston Rod Seal
Polypac supplies high pressure piston rod seal solutions engineered for heavy-duty hydraulic systems. Combining decades of sealing expertise with modern material science, our seals prevent leakage and ensure long service life under elevated pressures, aggressive media, and rapid reciprocating motion.
Materials & Performance
Our product range includes filled PTFE compounds (bronze-, carbon-, graphite-, MoS2- and glass-filled PTFE) and high-performance elastomers such as NBR, FKM, EPDM, silicone and FFKM. These materials are selected and formulated to optimize friction, wear resistance, extrusion control and compatibility—key factors for any high pressure piston rod seal in critical hydraulic applications.
Manufacturing & Testing Capabilities
Polypac’s custom rubber ring and O-ring factory covers over 10,000 m² with 8,000 m² of factory space and advanced production and testing equipment. We perform dimensional control, hardness testing, pressure endurance, and dynamic life-cycle testing to validate every high pressure piston rod seal before shipment.
Customization for Special Working Conditions
From extreme temperature cycles to abrasive contaminants and corrosive fluids, Polypac offers tailored designs and compound development. Our long-term collaborations with universities and research institutes enable rapid prototyping and material innovation to meet unique sealing challenges.
Applications and Industry Fit
Our high pressure piston rod seals are used in construction machinery, mobile hydraulics, industrial presses, marine systems and oil & gas equipment. They are optimized for high pressure, high speed and tight tolerance rod sealing environments.
Why Choose Polypac
Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier committed to quality, R&D and global service. As one of China’s largest seal developers, we combine scale with expert customization—ensuring each high pressure piston rod seal meets your operational demands.
Contact & Next Steps
Contact Polypac today for samples, CAD drawings, or bespoke sealing solutions. Trust our proven materials, rigorous testing and engineering support to deliver durable, low-leakage high pressure piston rod seals for your most demanding systems.
High pressure piston rod seal Display
What is the difference between NBR and FKM materials?
NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.
What is the purpose of the metal spring in a rotary shaft seal?
The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.
How do I choose the right material for my sealing application?
Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.
Why did my O-ring fail prematurely?
Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.
Are PTFE seals better than elastomers for chemical resistance?
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