Wear Resistant Piston Rod Seal — Polypac
Wear Resistant Piston Rod Seal Solutions by Polypac
Product Overview
Polypac’s wear resistant piston rod seal is engineered for demanding hydraulic applications where abrasion, high speed, and contamination threaten cylinder life. Using decades of sealing expertise, our designs minimize leakage and rod wear while ensuring smooth dynamic performance across a broad range of temperatures and pressures.
Materials & Advanced Technology
We combine filled PTFE variants (bronze-, carbon-, graphite-, MoS₂- and glass-filled PTFE) with High Quality elastomers such as NBR, FKM, EPDM, silicone and FFKM to optimize wear resistance, low friction and chemical compatibility. Precision molding, CNC machining and surface treatments produce seals that maintain elasticity and dimensional stability under cyclic loads.
Performance & Typical Applications
Designed for heavy machinery, mobile hydraulics, industrial cylinders and offshore equipment, our wear resistant piston rod seal delivers long service life in environments with abrasive contaminants, high pressures and frequent start-stop cycles. The seals perform reliably with standard hydraulic oils, synthetic fluids and under varied rod surface conditions.
Customization, Testing & Quality Assurance
Polypac’s 10,000+ m² facility includes advanced production and testing equipment to validate wear rate, friction coefficient, extrusion resistance and leak performance. We collaborate with universities and research institutes to develop tailored compounds and geometries for special working conditions, and we provide OEM sizing, material selection and prototyping.
Why Choose Polypac
Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with extensive R&D and production capabilities. Our commitment to engineering excellence, rigorous testing and responsive customization makes us the trusted partner for engineers seeking a durable wear resistant piston rod seal. Contact Polypac for specification support, samples and turnkey sealing solutions.
Wear resistant piston rod seal Display
When should I use a spring-energized seal instead of a standard elastomeric seal?
Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.
What is the difference between a static seal and a dynamic seal?
A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.
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.
What does "AS568" mean?
AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.
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