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KZT Guide & Seal Elements Integrated Low-Friction Guidance and Reliable Sealing (6) - Polypac

Polypac Press Machine Rod Seal

Polypac Press Machine Rod Seal delivers durable, low-friction sealing for hydraulic presses. Made with advanced materials and precision production, it offers high wear and temperature resistance, long life, and easy customization for special working conditions.

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Product Details

Product Overview

The Polypac Press Machine Rod Seal is designed to provide reliable sealing for hydraulic press rods and cylinders. Built for heavy-duty use, it reduces leakage, minimizes friction, and extends equipment life. Backed by Polypac's advanced manufacturing and material expertise, this rod seal is ideal for industrial presses, stamping machines, and forming equipment.

Key Features & Benefits

Durable performance: Engineered for long service life under high pressure and repeated motion.
Low friction: Smooth rod movement reduces wear on both seal and rod surface.
Leak-tight: Tight sealing prevents oil loss and maintains hydraulic system efficiency.
Temperature and chemical resistance: Suitable for a wide range of operating fluids and temperatures.
Customizable: Available in multiple materials and sizes to match special working conditions.

Materials & Custom Options

Polypac leverages decades of sealing material development. Starting from filled PTFE variants (bronze, carbon, graphite, MoS₂, glass) and extended to elastomers like NBR, FKM, silicone, EPDM, and FFKM, we offer the right compound for your needs. Custom profiles, hardness levels, and coatings are available to handle abrasive environments, high temperatures, or aggressive fluids.

Typical Applications

Commonly used in hydraulic presses, metal stamping machines, molding equipment, and industrial presses where rod sealing must withstand heavy loads and frequent cycles. Suitable for OEMs and maintenance teams seeking reliable replacements or performance upgrades.

Why Choose Polypac

Polypac is a scientific and technical seal manufacturer with over a decade of focused experience. Our 10,000+ m² facility, advanced testing, and collaborations with universities ensure consistent quality and innovation. We offer fast prototyping, strict quality control, and customized sealing solutions for demanding conditions.

Contact Polypac for specification guidance, sample evaluation, or custom quotes to ensure your press machine runs cleaner, longer, and more efficiently.

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Q&A

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.

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.

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 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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PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 13927708667

sales2@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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