Stainless Steel DIN 2353 Tube Fittings

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Stainless Steel DIN 2353 Tube Fittings Product Brief
Our Stainless Steel DIN 2353 Tube Fittings represent the industry standard for safe, reliable, and leak-free connections in high-pressure hydraulic and pneumatic systems. Utilizing a precision cutting ring that bites into the tube, they create a permanent, vibration-resistant metal-to-metal seal without soldering.

Key Product Highlights:

Premium Material: Manufactured from corrosion-resistant AISI 304/316 stainless steel for demanding environments.

Full Compliance: Meets DIN 2353, EN ISO 8434-1, and related ISO 8434-6 standards, ensuring global interchangeability.

Versatile Series: Available in Light (LL), Medium (L), and Heavy (S) series to meet pressure ratings from PN 100 to 630.

Critical Applications: Essential for leak-free performance in chemical processing, oil & gas, marine, heavy machinery, and food & pharmaceutical industries.

Engineered for durability and ease of installation, these fittings are the trusted choice for ensuring system integrity and minimizing downtime in critical operations worldwide.
  • 24 degree cone connector

  • Metric O-ring port, SAE O-ring port, JIS BSPP O-ring port, BSPP flat face port, Metric flat face port, Four bolt split flange, NPTF taper thread, BSPT taper thread

  • Straight, Elbow, 45 Degree Elbow, Tee, Run Tee, Branch Tee, Cross, Banjo, Plug and Cap, Nut and Sleeve

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Precision Engineered for Demanding Systems: Stainless Steel DIN 2353 Tube Fittings

In high-pressure hydraulic and pneumatic systems where leak-free performance is critical, the integrity of every connection is paramount. Our Stainless Steel DIN 2353 Tube Fittings represent the pinnacle of reliable, maintenance-free coupling technology. Designed as complete non-soldering compression fittings with a cutting ring, they provide a robust, permanent seal for tubing systems across the most demanding industrial sectors.

Manufactured from high-grade AISI 304 or 316 stainless steel, these fittings offer exceptional corrosion resistance, high strength, and long-term durability, ensuring system safety and reducing total cost of ownership.


Core Technology & Key Features

The superior performance of DIN 2353 fittings lies in their precise cutting ring design. When tightened, the single cutting ring bites securely into the tube, creating a permanent, three-point seal that is both pressure-tight and vibration-resistant. This metal-to-metal bite provides unparalleled reliability compared to conventional threaded connections.

  • Leak-Free, Permanent Seal: The cutting ring mechanism ensures a robust connection that withstands pressure pulsations, vibrations, and thermal cycling.

  • Superior Material Integrity: Made from corrosion-resistant stainless steel, ideal for harsh environments involving moisture, chemicals, or salt exposure.

  • High-Pressure Capability: Engineered to perform reliably in sustained high-pressure applications common in industrial hydraulics.

  • Easy and Verifiable Installation: Proper assembly is achieved with a defined torque, providing a visual and tactile confirmation of a secure fit.

Product Series & Selection Guide

To match the specific requirements of different applications, our DIN 2353 fittings are available in three distinct series. The following table outlines their primary characteristics to guide your selection:

SeriesPressure Rating (PN)Typical Application ScenariosIdeal For
LL (Light)Up to 100Low-pressure gases, plastic tubing, laboratory and instrumentation setups.Systems where minimal weight and low pressure are key.
L (Medium)Up to 315Measurement and control technology, hydraulics, pharmaceutical, food & beverage, and general industrial automation.The versatile standard for most industrial hydraulic and pneumatic applications.
S (Heavy)250 to 630Heavy machinery, chemical and petrochemical plants, shipbuilding, offshore platforms, and mining equipment.Extreme conditions with high pressure, strong vibration, and mechanical stress.

Standards Compliance & Specifications

Our fittings are meticulously manufactured to comply with international standards, ensuring global interoperability and performance assurance.

  • Primary Standard: DIN 2353 (Non-soldering compression fittings with cutting ring).

  • International Equivalents: Conforms to EN ISO 8434-1, which is the direct ISO adoption of the DIN standard. We also ensure compatibility with related standards such as ISO 8434-6 for specific port ends.

  • Material Standards: Tubes are recommended to be precision stainless steel according to DIN EN ISO 1127.

  • Thread Compatibility: Designed to work seamlessly with metric threads as per ISO 6149 and other international port standards.

Target Industries & Applications

The robustness and corrosion resistance of stainless steel make DIN 2353 fittings indispensable in sectors where failure is not an option:

  • Chemical & Petrochemical: Handling aggressive acids, solvents, and process fluids.

  • Oil & Gas: Onshore and offshore applications requiring reliable seals under extreme pressure and environmental exposure.

  • Marine & Shipbuilding: Resisting saltwater corrosion in hydraulic deck machinery, steering systems, and engine room utilities.

  • Heavy Engineering & Mobile Machinery: Withstanding constant vibration and shock in construction, mining, and agricultural equipment.

  • Food, Beverage & Pharmaceutical: Meeting strict hygiene standards for sanitary processing and clean-in-place (CIP) systems.


Optimize Your Fluid System with Confidence

Choosing the right fitting is critical for system safety, efficiency, and longevity. Our Stainless Steel DIN 2353 Tube Fittings provide a trusted, standardized solution that engineers and maintenance professionals rely on worldwide. By selecting the appropriate series (LL, L, or S) for your pressure and environmental needs, you invest in a connection that ensures peak performance and minimizes downtime.

Explore our full range of metric sizes and configurations. Contact our technical team today for detailed CAD drawings, specification sheets, and expert support in selecting the optimal fittings for your application.


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Fitsch has been in the business of hydraulic tube fittings, hydraulic adapters, hose fittings, hydraulic flanges, industrial fittings and hydraulic accessories for over 20 years, offering all our customer competitive products and supplies from our local industry manufacturers union.    
 

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