Press Machine Rod Seal Solutions by Polypac

Polypac Press Machine Rod Seal Solutions

Precision Seals Designed for Press Machines

Polypac specializes in high-performance Press Machine Rod Seal designs engineered to withstand heavy loads, high speeds, and challenging contamination environments. Our rod seals provide reliable sealing for hydraulic cylinders used in stamping, molding, and metal forming presses — minimizing leakage, reducing downtime, and extending rod life.

Materials & Compatibility

We offer a wide range of materials tailored to specific operating conditions, including filled PTFE variants (bronze, carbon, graphite, MoS₂, glass), and elastomers such as NBR, FKM, silicone, EPDM, and FFKM. Material selection for each Press Machine Rod Seal is based on pressure, temperature, media compatibility, and friction requirements to ensure optimal performance.

Custom Manufacturing & Technical Expertise

Founded in 2008, Polypac's custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space. Our advanced production and testing equipment, combined with long-term collaborations with universities and research institutions, enable rapid prototyping and bespoke sealing solutions for unique press machine applications.

Quality Control & Testing

Every Press Machine Rod Seal undergoes strict quality control and endurance testing to validate wear resistance, extrusion limits, and sealing integrity under dynamic loads. Our laboratory protocols and field-test programs ensure compliance with industry standards and customer specifications.

Applications & Benefits

Polypac rod seals are ideal for hydraulic presses in automotive, aerospace, heavy machinery, and manufacturing sectors. Benefits include reduced leakage, improved energy efficiency, lower maintenance costs, and prolonged cylinder life — delivering measurable ROI for plant operators.

Why Choose Polypac

As an award-winning scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac combines material science, precision manufacturing, and customization capabilities. For dependable Press Machine Rod Seal solutions that meet special working conditions, contact our engineering team for consultation, samples, and custom quotes.

Press Machine Rod Seal Display

FAQ:
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.

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.

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