Seal Kits for Komatsu Hydraulic Breaker
Precision-engineered seal kit for Komatsu hydraulic breakers, designed to withstand extreme impact, high-frequency vibration, and intense hydraulic pressure. Each kit includes all essential seals—rod, piston, dust, buffer, and wear rings—crafted from premium materials like NBR, PU, and PTFE for maximum durability and leak protection. Perfect for restoring performance and extending the life of Komatsu JTHB series breakers in demanding applications such as mining, demolition, and quarrying.
| Material | NBR/ PTFE/ ACM/ VMQ/ FKM/ HNBR/ EPDM/ Silicone and etc |
|---|---|
| Working Temperature | -40–120℃(according to the material) |
| Pressure | Up to 690bar(10000psi) |
| Hardness | 90-95 Shore A |
| Color | Black/Orange/Brown/White/Brown |
| MOQ | 20 Pieces |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
Komatsu hydraulic breakers are subjected to intense workloads in construction, mining, and demolition. To ensure consistent performance and avoid costly downtime, a reliable seal kit is essential. Our Komatsu breaker seal kits are precision-manufactured for a perfect fit, ensuring complete sealing performance and high durability.
Whether you’re doing scheduled maintenance or a full piston rebuild, this kit provides all the components needed to restore hydraulic integrity.
Kit Contents & Material
Each Komatsu breaker seal kit includes:
- Rod seals – Prevent hydraulic oil from leaking out of the breaker
- Dust seals – Block contaminants like dust and moisture from entering the system
- Piston seals – Maintain pressure inside the impact chamber
- Buffer rings – Absorb pressure spikes and protect primary seals
- Wear rings – Ensure proper alignment and prevent metal-to-metal contact
Materials Used:
- NBR (Nitrile Rubber) – Oil resistance and elasticity
- PU (Polyurethane) – Excellent wear resistance and mechanical strength
- PTFE (Teflon) – Low friction and high temperature tolerance
- Phenolic fabric (optional) – For high-load wear ring applications
Applicable Models
This seal kit is compatible with multiple Komatsu breaker models, including but not limited to:
JTHB60 / JTHB101 / JTHB120 / JTHB160 / NBR (Nitrile Rubber) – Oil resistance and elasticity
PU (Polyurethane) – Excellent wear resistance and mechanical strength
PTFE (Teflon) – Low friction and high temperature tolerance
Phenolic fabric (optional) – For high-load wear ring applicationsJTHB190 / JTHB210
Other Komatsu-compatible hydraulic breaker models with similar piston and rod diameters.
If you're unsure about compatibility, feel free to contact us with your breaker model or existing part number.
| part number | |||||||
|---|---|---|---|---|---|---|---|
| JTHB20 | JTHB30 | JTHB40 | JTHB50 | JTHB60 | JTHB65 | JTHB70 | JTHB150 |
| JTHB210-3 | JTHB230 | JTHB310 | JTHB400 | JTHB650-1 | |||
Installation Methods
We provide reference to two standard installation methods for breaker seal kits. You can choose based on your tooling availability and technician preference:
Method 1: With Mounting Pin
Use the mounting pin to assist in seal positioning
Carefully push seals into the groove using the cone sleeve and hand pressure
Method 2: With Tools
Use a ballast tool, locating cone sleeve, and auxiliary pressure plate
Apply moderate force evenly to avoid seal distortion
Ensure all seals are properly seated to avoid leakage
Packaging & Delivery
- Individually packed by type and layer
- Vacuum-sealed or zip-bagged for moisture protection
- Clear labels for quick identification
- Export-ready cartons or wooden cases
Why Choose Our Seal Kits?
- 100% tested before packing
- OEM quality for aftermarket cost
- Long service life under extreme conditions
- Strong aftermarket compatibility and support
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
