Premium DIN 2353 Compression & Cutting Ring Fittings
Fitsch is an industry-leading manufacturer and supplier of high-performance DIN 2353 compression fittings and 24-degree cutting ring tube connectors. Engineered to provide exceptional pressure resistance and leak-free performance under severe fluid system pulses, our bite-type metric tube fittings serve as the reliable mechanical connection baseline across modern hydraulics, pneumatics, and centralized lubrication systems.
Our comprehensive catalog specializes in the LL (Extra Light) series—ranging from 4mm to 6mm line systems—commonly utilized to link automatic grease lines and lubrication tube fittings to progressive distribution blocks. Whether you require complete standard connectors or separate component replacements like nuts and olives, Fitsch products deliver strict interchangeability with international hardware brands.
Understanding the DIN 2353 Working Principle
Our metric bite-type fittings operate on a precision-controlled, single-ferrule deformation mechanical assembly concept:
The 24° Cone Seat: The fitting body features an internal 24-degree taper angle that acts as the primary fluid sealing interface.
The Cutting Ring Bite: As the DIN LL coupling nut is torqued down, it drives the cutting ring axially forward along the tubing wall.
The Dual Elastic Seal: The leading cutting edge of the ferrule cuts uniformly into the outer surface of the seamless precision tube, throwing up a visible collar of displaced material. This mechanical bite blocks fluid bypass, isolates system pulses, and safely grips lines during intense physical machine vibrations.
Core Hardware Components & Product Lines
Lubrication Tube Fittings & Connectors: Straight, elbow, tee, and banjo body styles built for metric fluid transport paths.
DIN LL Cutting Rings: High-precision, extra-light metric ferrules designed for targeted bite consistency across small-diameter pipelines.
DIN LL Coupling Nuts: Robust internal-thread tracking nuts to drive safe, reliable cutting assembly torque parameters.
Stainless Steel Central Lubrication Fittings: Forged out of marine-grade SS316 or SS304 to endure aggressive chemical cleanings, offshore moisture, or corrosive industrial vapors.
DIN 3862 Double Cone Olives: Alternative metallic compression compression sleeves optimized for brass and copper tube installations.
Reinforcing Sockets for PA12 Tubes: Internal support sleeves preventing thin-walled polyamide or nylon hoses from collapsing under bite-ring loads.
Technical Dimensions & Engineering Compliance
To ensure problem-free sourcing and layout cross-referencing, all Fitsch compression hardware adheres to recognized global manufacturing directives:
ISO 8434-1 / DIN 2353: Standard unified guideline governing metric 24° cone metallic tube joints.
DIN 2391 Compliance: Optimally tailored for use alongside seamless precision steel tubes and high-strength polyamide (PA12) tubing.
Thread Specification Layouts: Available across standard Metric Taper (DIN 158-1) threads like M6, M8x1, and M10x1 keg, alongside parallel NPTF and BSPT (R1/8) interface configurations.
Targeted System Applications
Our DIN 2353 bite type connectors deliver critical fluid-handling security across multiple high-pressure infrastructure applications:
Heavy Machinery & Fleet Transport: Automatic grease distribution lines for excavator joints, truck chassis, and agricultural trailers.
Industrial Plant Production: Steel mills, automated material conveyors, and plastic injection molding machinery.
Corrosive Environments: Marine shipping gear, food and beverage processing plant lines, and wind energy turbine
