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Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
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{"title":"SUNZO DIN9250 Serrated Safety Washer with Versatile Sizes (M1.6 to M36),","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/51\/82b2178dcd451623f283a7dc229e-200x200-1\/sunzo_din9250_serrated_safety_washer_with_versatile_sizes_28m1_6_to_m36_29_2c_corrosion_resistant_and_vibration_resistant_for_indu.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Material":"Steel","Load Type":"Compression","Production Process":"Hot Roll"}}
{"title":"DIN2093 Disc Spring Belleville Wave Washer Stainless Steel Chemical Industry","imgUrl":"https:\/\/img.chinax.com\/nimg\/74\/15\/6773bac39c21b2c94106c8220cbc-200x200-1\/din2093_disc_spring_belleville_wave_washer_stainless_steel_chemical_industry.jpg","attrs":{"Model NO.":"sunzo","Function":"Pressed, Phonation, Drive, Restoration, Measurement","Material":"Steel","Usage":"Industrial, Auto, Furniture, Motorcycle, Home Appliance"}}
{"title":"DIN9250 Serrated Safety Washer Combines Friction and Mechanical Lock with","imgUrl":"https:\/\/img.chinax.com\/nimg\/e1\/83\/ba3cef11eaa518bacda82b570f45-200x200-1\/din9250_serrated_safety_washer_combines_friction_and_mechanical_lock_with_precision_machined_gear_surface_2c_iso_16130_vibration_t.jpg","attrs":{"Place of Origin":"Sihong, China","Brand Name":"Sunzo","Certification":"CE\/IATF16949\/45001\/14001\/9001","Minimum Order Quantity":"Negotiable"}}
{"title":"SUNZO Disc Spring for Precision Machinery Applications with Extended Service","imgUrl":"https:\/\/img.chinax.com\/nimg\/8f\/30\/e3092cca5ebdfec70c8f1981f26f-200x200-1\/sunzo_disc_spring_for_precision_machinery_applications_with_extended_service_life_and_iso_17025_accredited_lab_analysis.jpg","attrs":{"Inspection frequency":"500 operating hours or monthly","Surface defect criteria":"Hairline cracks >0.02mm depth, corrosion pitting ASTM G46 rating \u2264 2","Dimensional tolerance":"\u00b10.05mm free height, <3% thickness variation","Load-deflection compliance":"ISO 16148"}}
{"title":"SUNZO High Stiffness Disc Spring vs Compression Spring for Space-Efficient","imgUrl":"https:\/\/img.chinax.com\/nimg\/bd\/73\/e612a95ddf52760f57113198563f-200x200-1\/sunzo_high_stiffness_disc_spring_vs_compression_spring_for_space_efficient_precision_machinery_applications.jpg","attrs":{"Spring Type":"Disc Spring","Shape":"Conical","Stiffness Range":"5-50 N\/mm","Load Capacity":"0.5-50 kN"}}
SUNZO Custom Disc Springs for Hydraulic Seals: Engineered Preload Solutions for Critical Sealing Applications
Hydraulic sealing systems demand precision-engineered disc springs that maintain consistent axial preload under dynamic pressure cycles, and SUNZO delivers application-specific solutions through advanced material science and iterative design engineering. Our custom hydraulic seal disc springs are engineered to provide micron-level preload stability (±2% tolerance) across operating pressures from 500 psi to 10,000 psi, ensuring bubble-tight sealing (≤1*10⁻⁶ std cm³/s helium leak rate) in critical hydraulic components.
Design Engineering for Sealing Performance
Each spring undergoes FEA simulation to optimize conical geometry (dish height-to-thickness ratio 0.4-1.2) and stacking configuration, with variable stiffness profiles (5-50 N/mm) tailored to seal compression requirements. For high-pressure applications (≥5,000 psi), we implement nested spring assemblies with parallel stacking to achieve load capacities up to 20 kN while maintaining axial space efficiency (40% smaller footprint than conventional coil springs).
Material Selection Matrix
50CrVA Alloy Steel: Ideal for industrial hydraulic systems operating at -40°C to 150°C, offering tensile strength 1,800 MPa and fatigue life >10⁶ cycles at 70% yield strength.
SUS316 Stainless Steel: Recommended for marine/chemical environments with 1,000+ hours salt spray resistance (ASTM B117) and chloride ion tolerance up to 10,000 ppm.
Inconel 718 Superalloy: Engineered for extreme conditions (-270°C to 650°C), providing creep resistance under sustained loads and compatibility with phosphate-ester hydraulic fluids.
Surface Treatment Technologies
Phosphating: Zinc-manganese coating (8-12μm) for enhanced lubricity and corrosion protection in mineral oil systems
Dacromet Coating: Chromate-free zinc-aluminum flake finish (5-8μm) with 1,500+ hours salt spray resistance per ISO 9227
PTFE Impregnation: For low-friction applications requiring coefficient of friction <0.15 in dynamic sealing scenarios
Application-Specific Solutions
Our engineering team collaborates with clients to address unique challenges:
Mobile Hydraulics: Compact springs for excavator boom cylinders with temperature cycling resistance (-30°C to 120°C)
Offshore Oil & Gas: Subsea wellhead seals using Inconel 718 with electroless nickel plating (50μm thickness)
Aerospace Hydraulics: Weight-optimized springs for flight control systems meeting MIL-DTL-25987 specifications
Quality Validation Protocol
Every disc spring undergoes:
Load-deflection testing per ISO 16148 (±3% force tolerance)
Ultrasonic flaw detection (ASTM E164) for subsurface defects
Thermal cycling (-50°C to 200°C) for 1,000 cycles to verify preload retention
Material traceability from raw material lot to final inspection (EN 10204 3.1 certification)
SUNZO's custom hydraulic seal disc springs reduce seal replacement frequency by 60% in field applications, supported by our global technical support network and 24-hour rapid prototyping service for urgent sealing challenges.
