The Fluorine Rubber Hydraulic Ferrule is an upgraded sealing component developed to address common industry issues associated with standard rubber ferrules, such as high-temperature aging, chemical corrosion, and failure due to high-pressure extrusion. Manufactured in strict accordance with DIN international standards, the product range covers sizes from φ6mm to φ42mm, allowing for direct, in-situ replacement of similar imported ferrules. Unlike conventional NBR (nitrile rubber) ferrules, this product is designed for harsh operating conditions—including high temperatures, corrosive media, prolonged outdoor exposure, and high-pressure surges. It effectively resolves issues such as frequent pipeline leakage and the need for frequent seal replacement in high-end hydraulic, petrochemical, and power equipment, making it the preferred choice for long-lasting sealing in demanding fluid piping systems. The factory supports custom formulations, application-specific testing, and contract manufacturing, with comprehensive quality control from the source to meet the needs of global high-end industrial equipment.
Wide temperature range & high heat resistance: Long-term service up to 200℃, short-term peak up to 250℃. Excellent elasticity retention at elevated temperature, no rapid failure due to thermal aging.
Broad chemical compatibility: Resistant to mineral oil, synthetic hydraulic oil, high-temperature heat transfer oil, fuel, strong acids, strong alkalis and most organic solvents. Volume change <4% after 1000h immersion in oil at 150℃.
Ultra-long service life: Compression set ≤20% at 200℃, service life is 3–5 times that of NBR ferrules, greatly reducing downtime and maintenance frequency.
Excellent weathering & aging resistance: Outstanding ozone, UV and atmospheric aging resistance, no cracking under long-term outdoor exposure and harsh environments.
High-pressure extrusion resistance: Maintains good structural strength at high temperature, not easily extruded into gaps under 31.5MPa high-pressure conditions, suitable for medium-high pressure systems.
High-temperature hydraulic systems (injection molding / die casting machines), petrochemical pipelines, engine peripheral oil lines, turbocharger lines, aerospace equipment, semiconductor equipment, outdoor exposed industrial equipment.
German chemical equipment manufacturer: Used in chemical pipeline compression fittings, resistant to weak acid and high-temperature heat transfer oil mixed media, 24 months continuous operation without sealing failure.
Domestic die casting machine brand: Matched with high-temperature hydraulic system, stable sealing under long-term 180℃ working condition, solved the problem of monthly replacement of original NBR seals.
Middle East oilfield service provider: Applied to wellhead auxiliary pipelines, resistant to high temperature and crude oil, suitable for desert outdoor environment, service life 3 times that of local competitors.
Tube preparation: Flatten and deburr the tube end, clean tube and fitting bore, ensure no impurities, chips or grease.
Assembly sequence: Slide on compression nut → FKM sealing ring → metal ferrule in order, make sure the sealing ring is flat and not twisted.
Pre-assembly: Insert tube fully into fitting body, tighten nut by hand, then tighten to standard torque (or 1.25–1.5 turns).
Pressure test: Perform 1.5× working pressure holding test, put into service after no leakage is confirmed.
1. Warranty Scope: The entire Fluorine Rubber Hydraulic Ferrule series comes with a 12-month manufacturer's warranty, provided the product is installed according to standard specifications and used within rated temperature and pressure limits with compatible media. The warranty covers factory-related quality issues such as raw material defects, molding process flaws, and dimensional tolerance deviations.
2. Free After-Sales Service: During the warranty period, customers are entitled to free replacement or resupply of products experiencing non-human-induced quality issues—such as abnormal high-temperature aging, cracking of the sealing surface, failure due to media immersion, or abnormal deformation. Technical guidance for troubleshooting operating conditions is also provided.
3. Exclusions: The warranty does not cover damage resulting from operation beyond rated temperature or pressure limits, forced assembly causing twisting, incompatibility between the material and the medium, damage caused by manual cutting or impact, or long-term operation exceeding design loads.
4. Value-Added Support for Bulk Orders: Bulk purchasers can obtain material test reports, aging resistance test data, and application compatibility manuals to facilitate overseas project acceptance, equipment audits, and system documentation.
Q1: In which operating conditions do FKM (fluororubber) ferrules offer key advantages over standard NBR ferrules?
A: Standard NBR ferrules are suitable only for general hydraulic oil applications at temperatures below 100°C; they are prone to rapid hardening and cracking when exposed to high temperatures, corrosive media, or outdoor environments. FKM (fluoroelastomer) ferrules offer long-term resistance to high temperatures (up to 200°C) and complex media such as acids, alkalis, fuels, and synthetic hydraulic fluids. With significantly enhanced aging and extrusion resistance, they are particularly well-suited for harsh operating environments—including die-casting, petrochemical processing, oilfield operations, and engine-adjacent applications—thereby directly reducing the frequency of equipment downtime for maintenance.
Q2: Can the Fluorine Rubber Hydraulic Ferrule directly replace equivalent products from imported brands?
A: Yes, it is fully interchangeable. This product strictly adheres to DIN standards for dimensions and sealing structure; its tolerances, assembly clearances, and compression ratios match those of imported products. No modifications to tubing or adjustments to assembly torque are required—it fits directly into existing setups, significantly lowering procurement costs and lead times compared to imported parts.
Q3: Is a custom fluoroelastomer formula required for different media or operating conditions?
A: Standard formulas are suitable for conventional high-temperature hydraulic oil and general fuel applications. However, for strong acids/alkalis, special organic solvents, or continuous ultra-high-temperature operations, we offer custom formulation services. We tailor the rubber compound based on specific media parameters and temperature data to prevent issues such as swelling or failure caused by prolonged immersion.
Q4: Can improper assembly cause premature failure of the fluoroelastomer ferrule?
A: Yes. Due to the material's higher hardness and toughness, issues such as twisting during assembly, forced compression, or trapped debris can cause localized damage to the sealing surface, potentially leading to micro-leaks during long-term high-pressure operation. Strictly following standard assembly procedures—ensuring straight alignment, preventing twisting, and keeping the tubing clean—allows the ferrule to deliver optimal, long-lasting sealing performance.
Q5: Does the storage method affect the ferrule's service life?
A: Storage conditions directly impact sealing performance. Prolonged exposure to sunlight, humidity, or high temperatures accelerates rubber aging and reduces elasticity. Unused ferrules should be stored in a cool, dry place away from direct light and protected from crushing or deformation to maintain their original sealing performance and service life.
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Changxing Road, Jiangbei District, Ningbo City, Zhejiang Province, China
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