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Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
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Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
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Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi

MOQ: 1 set
Price: $11-12
Standard Packaging: PP bag inside, carton box outside
Delivery Period: 5-7 work days
Payment Method: L/C, D/A, D/P, T/T，Alipay
Supply Capacity: 300 sets
Detail Information
Product Description
Ratings & Reviews
Detail Information
Place of Origin
Korea
Brand Name
WYS
Certification
ISO9001
Model Number
CAT E312C
Part Name:
CAT-E312C
Material:
HNR
Temperature Range:
-40°C To +100°C
Stress Range:
35 MPa-42 MPa
Function:
Pressure And Temperature Resistance
Packing:
Plastic Bag
Size:
Standard Size/Customize
MOQ:
1 SET
Delivery Time:
3-7 Days
Condition:
Original
Quanlity:
1 EA
Brand Support:
CAT, KOMATSU, HITACHI
Video Inspection:
Provided
Test Report:
Available
After-sales Service:
Online Support
Highlight:

1 Year Warranty Excavator Arm Seal Kit

,

High Quality Excavator Cylinder Seal Kit

,

Original Parts Hydraulic Seal Kit

Product Description

Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
CAT E312C original boom cylinder seal kit - a high-performance solution
PRODUCT  PARAMETER
Brand Support CAT| KOMATSU | HITACHI
Brand WYS® Country of Origin Korea
Product Name CAT-E312C Part Name Arm Seal Kit
Material HNR Quanlity 1 EA
Temperature (DEG) -40°C to +100°C Stress (MPA) 35 MPa-42 MPa
Certification CE MOQ 1 SET
Guarantee Period 1 Year Test Report Available
Delivery Time 5-7 Days After-sales Service Online Support

 

Advantages
►Highest Reliability

After repair, the components approach original factory performance standards, resulting in a long service life and extremely low failure rate.

 

►Optimal Performance Matching

 Nearly 100% compatibility with the hydraulic system (pumps, valves, and fluids) ensures smooth operation, quick response, and no leaks.

 

►Protects Overall Equipment Value

Prevents oil contamination and component wear caused by poor sealing, protecting expensive hydraulic pumps and main control valves.

 

►Lower Total Cost of Ownership

 Although the initial purchase cost may be higher than aftermarket parts, its longer service life and extremely high reliability reduce downtime, repeated repairs, and the risk of collateral damage, resulting in a lower total cost.

 

Product Detail
Standard parts/sizes, customization available.
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 0     Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 1

Main Components

 

Main piston seal Polyurethane U-ring or similar combination seal
Piston rod main seal Step seal or similar multi-lip seal
Buffer seal Located on the inner side of the rod seal, used for high-pressure protection
 Dust seal  Double-lip or multi-lip dust seal
 Guide ring/Support ring  Piston guide ring (PTFE),Rod guide bushing (bronze bushing)
 O-rings   Available in various sizes, used for static sealing
 Back-up ring  installed on the high-pressure side of the main seal to prevent extrusion
 Spare fixing screws/circlips:  Some kits include critical threaded fasteners or circlips
 Lubricant  A small packet of specialized assembly grease

 

Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 2   Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 3
Guangzhou Yangkai Machinery Company, a WYS seal manufacturer, boasts 20 years of industry experience.
We provide wholesale, distribution, and repair solutions for excavator seals to customers in Southeast Asia, South America, the Middle East, and Europe, earning the trust of a wide range of clients.
Through trade shows, we have also established valuable partnerships.
No matter where you are from, we are dedicated to helping you achieve profitability.
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 4
Payment & Shipment
  • Payment Methods: LC, T/T, PayPal, Alipay, Western Union
  • Shipping Options: By sea, air, or express - determined by customer preference
Frequently Asked Questions
Q1: What is your company information?
A1: Our company is headquartered in Guangzhou City with two factories in Tianjin and Shenyang. We have professional production, sales, and quality inspection teams.
Q2: How to get samples?
A2: We support sample service - please contact customer service for details.
Q3: How to place an order?
A3: Contact us via Facebook or email - our sales department will assist you.
Q4: About quality control?
A4: We have professional quality inspection teams and welcome third-party inspections.
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

W
w*m
Canada Jan 5.2026
trustpilot.com
Helpful (3)
"When I told them I got a lower quote elsewhere, they gave me a transparent full price that matched the product's value. The motor is currently running very well."
Review Image
Review Image
A
a*d
Bangladesh Jan 1.2026
trustpilot.com
Helpful (1)
Extremely satisfied with this purchase! The sealing ring fits perfectly and works smoothly. Packaging was quick and secure. I will definitely buy again.
Review Image
Tags: 

PC200-5 Excavator Cylinder Bucket Seal Kit,  

SKF Cylinder Bucket Seal Kit,  

SKF Seal Kit

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products
PRODUCTS DETAILS
Products

Excavator Cylinder Seal Kits

Breaker Seal Kit

Center Joint Seal Kit

Control Valve Seal Kit

Hydraulic Pump Seal Kit

Swing Motor Seal Kit

Travel Motor Seal Kit

Gear Pump Seal Kit

Hydraulic Oil Seal
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
  • name
  • name
  • name
  • name
  • name
  • name
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
MOQ: 1 set
Price: $11-12
Standard Packaging: PP bag inside, carton box outside
Delivery Period: 5-7 work days
Payment Method: L/C, D/A, D/P, T/T，Alipay
Supply Capacity: 300 sets
Detail Information
Product Description
Detail Information
Place of Origin
Korea
Brand Name
WYS
Certification
ISO9001
Model Number
CAT E312C
Part Name:
CAT-E312C
Material:
HNR
Temperature Range:
-40°C To +100°C
Stress Range:
35 MPa-42 MPa
Function:
Pressure And Temperature Resistance
Packing:
Plastic Bag
Size:
Standard Size/Customize
MOQ:
1 SET
Delivery Time:
3-7 Days
Condition:
Original
Quanlity:
1 EA
Brand Support:
CAT, KOMATSU, HITACHI
Video Inspection:
Provided
Test Report:
Available
After-sales Service:
Online Support
Minimum Order Quantity:
1 set
Price:
$11-12
Packaging Details:
PP bag inside, carton box outside
Delivery Time:
5-7 work days
Payment Terms:
L/C, D/A, D/P, T/T，Alipay
Supply Ability:
300 sets
Highlight

1 Year Warranty Excavator Arm Seal Kit

,

High Quality Excavator Cylinder Seal Kit

,

Original Parts Hydraulic Seal Kit

Product Description

Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi
CAT E312C original boom cylinder seal kit - a high-performance solution
PRODUCT  PARAMETER
Brand Support CAT| KOMATSU | HITACHI
Brand WYS® Country of Origin Korea
Product Name CAT-E312C Part Name Arm Seal Kit
Material HNR Quanlity 1 EA
Temperature (DEG) -40°C to +100°C Stress (MPA) 35 MPa-42 MPa
Certification CE MOQ 1 SET
Guarantee Period 1 Year Test Report Available
Delivery Time 5-7 Days After-sales Service Online Support

 

Advantages
►Highest Reliability

After repair, the components approach original factory performance standards, resulting in a long service life and extremely low failure rate.

 

►Optimal Performance Matching

 Nearly 100% compatibility with the hydraulic system (pumps, valves, and fluids) ensures smooth operation, quick response, and no leaks.

 

►Protects Overall Equipment Value

Prevents oil contamination and component wear caused by poor sealing, protecting expensive hydraulic pumps and main control valves.

 

►Lower Total Cost of Ownership

 Although the initial purchase cost may be higher than aftermarket parts, its longer service life and extremely high reliability reduce downtime, repeated repairs, and the risk of collateral damage, resulting in a lower total cost.

 

Product Detail
Standard parts/sizes, customization available.
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 0     Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 1

Main Components

 

Main piston seal Polyurethane U-ring or similar combination seal
Piston rod main seal Step seal or similar multi-lip seal
Buffer seal Located on the inner side of the rod seal, used for high-pressure protection
 Dust seal  Double-lip or multi-lip dust seal
 Guide ring/Support ring  Piston guide ring (PTFE),Rod guide bushing (bronze bushing)
 O-rings   Available in various sizes, used for static sealing
 Back-up ring  installed on the high-pressure side of the main seal to prevent extrusion
 Spare fixing screws/circlips:  Some kits include critical threaded fasteners or circlips
 Lubricant  A small packet of specialized assembly grease

 

Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 2   Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 3
Guangzhou Yangkai Machinery Company, a WYS seal manufacturer, boasts 20 years of industry experience.
We provide wholesale, distribution, and repair solutions for excavator seals to customers in Southeast Asia, South America, the Middle East, and Europe, earning the trust of a wide range of clients.
Through trade shows, we have also established valuable partnerships.
No matter where you are from, we are dedicated to helping you achieve profitability.
Original parts CAT E312C excavator boom cylinder seal kit for Komatsu Hyundai Hitachi 4
Payment & Shipment
  • Payment Methods: LC, T/T, PayPal, Alipay, Western Union
  • Shipping Options: By sea, air, or express - determined by customer preference
Frequently Asked Questions
Q1: What is your company information?
A1: Our company is headquartered in Guangzhou City with two factories in Tianjin and Shenyang. We have professional production, sales, and quality inspection teams.
Q2: How to get samples?
A2: We support sample service - please contact customer service for details.
Q3: How to place an order?
A3: Contact us via Facebook or email - our sales department will assist you.
Q4: About quality control?
A4: We have professional quality inspection teams and welcome third-party inspections.
Tags: 

PC200-5 Excavator Cylinder Bucket Seal Kit,

SKF Cylinder Bucket Seal Kit,

SKF Seal Kit

Guangzhou Yangkai Machinery Parts Co., Ltd.
3rd Floor, Building B, Goldfish Street, No. 1196, Zhongshan Avenue, Tianhe District, Guangzhou
Tel: +86 18680283811
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