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Xiamen Dezhengkai Sealing Technology Co., Ltd

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China Hydraulic Oil Seal MPS/MPI/U + S Reinforced Main Oil Seal Excavator Bulldozer
China Hydraulic Oil Seal MPS/MPI/U + S Reinforced Main Oil Seal Excavator Bulldozer

  1. China Hydraulic Oil Seal MPS/MPI/U + S Reinforced Main Oil Seal Excavator Bulldozer
  2. China Hydraulic Oil Seal MPS/MPI/U + S Reinforced Main Oil Seal Excavator Bulldozer

Hydraulic Oil Seal MPS/MPI/U + S Reinforced Main Oil Seal Excavator Bulldozer

  1. MOQ: 100PCS
  2. Price: Negotiations
  3. Get Latest Price
Payment Terms L/C,T/T
Supply Ability 10000PCS/MONTH
Delivery Time 7-10 days
Packaging Details 100pc/bag
Product Name Hydraulic oil seal
Materials PU + NBR
Color Blue + Black
Temperature -30℃~120℃
Work pressureWork pressure 0~40MPa
Hardness range Shaw A 70~90°
Sealed form Double-sided static seal / Reciprocating dynamic seal
Function Oil-resistant, wear-resistant, and high-pressure resistant
Brand Name DZK
Model Number MPS
Certification ROHS
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C,T/T Supply Ability 10000PCS/MONTH
Delivery Time 7-10 days Packaging Details 100pc/bag
Product Name Hydraulic oil seal Materials PU + NBR
Color Blue + Black Temperature -30℃~120℃
Work pressureWork pressure 0~40MPa Hardness range Shaw A 70~90°
Sealed form Double-sided static seal / Reciprocating dynamic seal Function Oil-resistant, wear-resistant, and high-pressure resistant
Brand Name DZK Model Number MPS
Certification ROHS Place of Origin CHINA
High Light MPS MPI U Hydraulic Oil SealReinforced Main Oil Seal
Hydraulic Star-shaped U-ring MPS Combination Seal | Advanced U + S Sealing System
Product Overview: Redefining Hydraulic Seal Standards

Hydraulic Star-shaped U-ring MPS Combination U + S Seal is a precision sealing component developed specifically for high-pressure hydraulic systems. It innovatively integrates the bidirectional sealing capability of the U-shaped seal structure with the elastic compensation advantages of the star-shaped S-ring, forming a core design of 'dual sealing + elastic self-adaptation'. The product is made from imported high-quality elastomeric materials through precise molding and secondary vulcanization processes. It can maintain excellent sealing performance under extreme pressure, temperature fluctuations, and complex medium environments. It effectively solves industry pain points such as easy wear, leakage, and short service life of traditional sealing components, providing stable and long-lasting sealing protection for hydraulic equipment.

Core Structure and Technical Advantages

Dual-structure compound design, doubled sealing performance

  • U-shaped main seal layer: Adopting an optimized lip angle design, the lip automatically adheres to the sealing surface under pressure, forming a bidirectional sealing barrier that can withstand up to 40MPa working pressure, effectively blocking leakage of media such as hydraulic oil and emulsions;
  • S-shaped star elastic ring: Embedded inside the U-shaped structure, it provides continuous elastic compensating force, automatically adapting to minor deformations and wear of the sealing surface, eliminating gap leakage risks. At the same time, it reduces the friction coefficient between the seal and the contact surface, lowering power loss.

Selection of high-end materials for complex working conditions

  • The main material can be composed of PU + NBR, which has wear-resistant and high-pressure resistant properties.
  • The material has excellent tear resistance (≥15kN/m), compression set resistance (≤20%), and temperature resistance range (-30℃~120℃), capable of withstanding the harsh working conditions of hydraulic systems.

Precision manufacturing process with stable and reliable quality

  • Formed using CNC precision molds, dimensional tolerance is controlled within ±0.02mm, ensuring perfect fit with the seal groove;
  • After 24-hour high-temperature aging test, 100,000-cycle pressure test, and medium immersion test, the product pass rate reaches 99.8%, and the service life is 3~5 times longer than that of traditional seals.
Key Performance Parameters
Product Name Hydraulic oil seal Materials PU + NBR
Color Blue + Black Function Oil-resistant, wear-resistant, and high-pressure resistant
Standard or non-standard Standard product Temperature -30℃~120℃
Work pressureWork pressure 0~40MPa Sealed form Double-sided static seal / Reciprocating dynamic seal
Hardness range Shaw A 70~90° Applicable Media Mineral oil, hydraulic oil, emulsion, ethylene glycol solution, etc.
Applicable Scenarios and Industry Applications

Thanks to its excellent sealing performance and wide adaptability, this product has been successfully applied to hydraulic systems in multiple fields:

  • Industrial Machinery: Sealing of hydraulic cylinders and hydraulic valve groups in hydraulic machine tools, injection molding machines, presses, and cranes;
  • Construction Machinery: Sealing of hydraulic executive components and hydraulic pipe fittings in excavators, loaders, and bulldozers;
  • Automotive Industry: Sealing of hydraulic braking systems and hydraulic power steering systems in commercial vehicles;
  • Energy Equipment: Sealing of wind power hydraulic systems, hydraulic pump stations, and hydraulic motors;
  • Other Fields: Hydraulic components in aerospace, hydraulic systems in ships, and hydraulic devices in agricultural machinery, etc.
Product real shot

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter,Seller

  • Year Established:

    2018

  • Total Annual:

    200-300

  • Employee Number:

    50~100

  • Ecer Certification:

    Verified Supplier

DZK seal Established in 2015, Xiamen De Zheng Kai Sealing Technology Co., Ltd. is a professional manufacturer of high-quality precision sealing components.Specializing in the production of various hydraulic and pneumatic sealing products. Its quality system certification has passed ISO 9001:201... DZK seal Established in 2015, Xiamen De Zheng Kai Sealing Technology Co., Ltd. is a professional manufacturer of high-quality precision sealing components.Specializing in the production of various hydraulic and pneumatic sealing products. Its quality system certification has passed ISO 9001:201...

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  • Xiamen Dezhengkai Sealing Technology Co., Ltd
  • No55 north pingcheng road.Haicang district,Xiamen City,Fuiian Province.China.
  • https://www.rubberringseals.com/

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