Polypac Shock Resistant Seal Solutions

Shock Resistant Seal Solutions by Polypac

Overview

Polypac specializes in Shock Resistant Seal products designed to protect hydraulic systems from impact, pressure spikes, and rapid dynamic loading. Combining decades of sealing expertise with advanced materials science, our seals minimize leakage and extend equipment life across mobile hydraulics, heavy machinery, and industrial actuators.

Material Expertise

Our product range includes filled PTFE variants (bronze, carbon, graphite, MoS2, glass) and elastomers such as NBR, FKM, silicone, EPDM, and FFKM. Each Shock Resistant Seal is formulated to balance resilience, compression set resistance, and wear characteristics so seals perform reliably under repeated shock loads and wide temperature ranges.

Manufacturing Capability

Polypac’s custom rubber ring and O-ring factory spans over 10,000 m2 with 8,000 m2 of production space and industry-leading equipment. This scale and precision manufacturing allow us to deliver consistent, high-tolerance Shock Resistant Seal components at volume while supporting rapid prototyping for unique applications.

Customized Solutions

We work closely with clients to engineer seals for specific working conditions—high-speed impact, cavitation, pressure surges, or contaminant-rich environments. Our design process leverages in-house material development and partnerships with universities and research institutions for tailored Shock Resistant Seal geometry and compound selection.

Testing & Quality Assurance

Every Shock Resistant Seal undergoes rigorous testing for shock absorption, fatigue, extrusion resistance, and thermal stability. Polypac’s quality controls meet international standards so you can trust seal performance in critical hydraulic systems where failure is not an option.

Applications & Benefits

Common applications include construction equipment, mining hydraulics, automotive suspension systems, and aerospace actuators. Benefits of choosing Polypac Shock Resistant Seal solutions include reduced downtime, longer service intervals, improved safety, and optimized lifecycle cost.

Get Started

Contact Polypac to discuss custom Shock Resistant Seal designs or request samples. From prototype to production, our technical team will recommend materials and configurations to deliver robust sealing under shock and dynamic load conditions.

Shock Resistant Seal Display

FAQ:
How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

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.

Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

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.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

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