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Superior Japanese Technology
Providing High-Quality Oil Seals For The Industry

BKS Oil Seal Technology Co., Ltd. specializes in research, development, and production of high-performance oil seals for excavators and hydraulic breakers, combining precision engineering with global reliability.

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About BKS Oil Seal Technology

Ebek specializes in oil seal technology as its core, focusing on research, development, and production of oil seals for major engineering machinery such as excavators and hydraulic breakers.

With a strong foundation in Japanese engineering excellence, BKS Oil Seal Technology Co., Ltd. delivers durable, high-performance sealing solutions trusted by industry professionals worldwide.

  • Japanese Engineering Precision
  • Specialized in Excavator & Hydraulic Breaker Seals
  • Global Operations with China & Japan Bases
  • Rigorous Quality Control & Testing
BKS Oil Seal Product

Our Products

High-performance oil seals engineered for durability, precision, and reliability in demanding industrial environments.

6630-043 Excavator Oil Seal

6630-043 Oil Seal

High-pressure excavator oil seal with reinforced NBR material for extended service life.

  • Type: Excavator Seal
  • Material: Nitrile Rubber (NBR)
  • Temp Range: -30°C to +120°C
228-013 Hydraulic Breaker Seal

228-013 Hydraulic Seal

Precision-engineered seal for hydraulic breaker applications with anti-extrusion design.

  • Type: Hydraulic Breaker
  • Material: HNBR
  • Pressure: Up to 40 MPa
160-304 Excavator Seal

160-304 Shaft Seal

Double-lip excavator shaft seal with spring-loaded design for optimal sealing.

  • Type: Excavator Shaft
  • Material: NBR + Spring
  • Diameter: 160mm x 304mm
6630-043 Variant

6630-043 Dual Lip

Enhanced dual-lip version for improved contamination resistance and longer lifespan.

  • Type: Excavator Dual Lip
  • Material: NBR + PTFE
  • Application: High Contamination Zones
CP-220NLB Hydraulic Breaker Seal

CP-220NLB Seal

Specialized seal for CP-series hydraulic breakers with low friction coating.

  • Type: Hydraulic Breaker
  • Material: HNBR + Coating
  • Model: Compatible with CP-220
6630-105 Excavator Seal

6630-105 Heavy Duty

Heavy-duty excavator oil seal for extreme pressure and temperature conditions.

  • Type: Excavator Heavy Duty
  • Material: FKM (Viton®)
  • Temp Range: -20°C to +200°C
Custom Seal Solutions Available

Custom OEM Seals

We develop custom oil seals tailored to your specific machinery and operating conditions.

  • Service: OEM & ODM Support
  • Materials: NBR, HNBR, FKM, PTFE
  • Testing: Full Performance Validation
High-Pressure Testing Lab

Quality Assurance

Every seal undergoes rigorous testing for pressure, temperature, and durability.

  • Testing: 100% Batch Inspection
  • Standards: ISO 6195, JIS B 2402
  • Warranty: 12-Month Performance Guarantee

Why Choose BKS Oil Seals?

Japanese Precision

Engineered with advanced Japanese technology for unmatched reliability and performance.

Extended Lifespan

Our seals last up to 30% longer than standard models due to advanced material formulations.

Global Support

Operations in Japan and China ensure fast response and reliable worldwide service.

Rapid Delivery

Efficient logistics network ensures fast shipping to customers across Asia, Europe, and the Americas.

15+
Years in Industry
50+
Global Clients
10M+
Seals Produced
99.7%
Quality Pass Rate

Frequently Asked Questions

What types of machinery do your oil seals support?

Our oil seals are specifically engineered for excavators and hydraulic breakers used in construction, mining, and heavy industrial applications.

What materials do you use in your oil seals?

We use high-grade Nitrile Rubber (NBR), Hydrogenated Nitrile (HNBR), and Fluoroelastomer (FKM/Viton®) depending on temperature, pressure, and chemical resistance requirements.

Do you offer custom seal manufacturing?

Yes, we provide OEM and ODM services. Our engineering team can develop custom seals based on your specifications, samples, or drawings.

What is your production and delivery timeline?

Standard products ship within 3-5 business days. Custom orders typically take 15-20 days depending on complexity. We offer air and sea shipping options.

How do I identify the correct seal for my machine?

Please provide the model number of your excavator or hydraulic breaker, or send us the dimensions of your current seal. Our technical team will match it to the correct BKS product.

Contact BKS Oil Seal Technology

Reach out to our team for product inquiries, technical support, or custom seal solutions. We're here to help you find the right sealing solution.

Japan Office

Tonibashi 2-chome, Chuo-ku, Tokyo

China Operations Center

No. 409, No. 601 Sishui Road, Huli District, Xiamen City, Fujian Province, China

Connect With Us

  • Line/WhatsApp: 008860900216287
  • Email: bks@bksjp.com
  • Email: bks8@bksjp.com
  • Gmail: bksjp2025@gmail.com
  • WeChat: BKS2899
  • Tel (China): 1887640699

Get in Touch

For product inquiries, technical support, or custom solutions, visit our official website to contact the BKS team directly.

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