Seals, O-Rings & Bearings for Sale

Seals and bearings are small parts that prevent big failures — leaks, contamination and wear start here. At Buy Heavy Machines we source new, used and OEM-quality aftermarket seals & bearings for construction, mining and agricultural fleets in 120+ countries. Every part is checked for fit and quality before export, and shipped CIF to your nearest port.

Types of Seals, O-Rings & Bearings for Sale

• Hydraulic seal kits — cylinder rod & piston seals
• O-rings & back-ups — fittings & valves
• Duo-cone/floating seals — final drive & swing
• Bearings — swing, wheel & pump
• Gasket sets — engine & hydraulic

Brands & compatibility we cover

We match OEM and premium aftermarket seals & bearings for: Caterpillar · Komatsu · Volvo · CTP · OEM-quality. Send us your machine model, serial number or the OEM part number and our team confirms the correct reference before you order.

Compatible machines

• Excavators
• Loaders
• Dozers
• Cranes

Why buy seals & bearings from Buy Heavy Machines

• Dealer-direct pricing — no middleman markup on OEM or aftermarket references.
• Worldwide CIF delivery — insured sea/air freight to 120+ countries, customs paperwork included.
• Fitment guaranteed — we verify part numbers against your machine before dispatch.
• One supplier for the whole machine — seals & bearings plus engines, hydraulics, undercarriage and tires in one order.

Frequently asked questions

How do I identify a cylinder seal kit?

Match the cylinder bore, rod diameter and machine model, or send the OEM kit number.

What is a duo-cone seal?

A floating metal-face seal used in final drives and swing gearboxes to keep oil in and abrasives out.

Explore related parts

• Hydraulic cylinders
• Final drives
• Rollers & idlers
• All heavy equipment spare parts
• Browse machines in stock

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Sources & Authoritative References

• Excavator (engineering)
• Heavy equipment
• Statista construction market