The Komatsu 07000-B3038 O-Ring is a precision-engineered sealing component built for the hydraulic circuits of large-scale construction equipment. It works by creating a tight, pressure-resistant barrier that stops hydraulic fluid from escaping while keeping dirt, moisture, and debris from entering sensitive system components. Despite its compact size, this O-Ring plays a direct role in keeping heavy machinery running smoothly and consistently under load.
Built to Komatsu’s exact factory specifications, the seal is molded from a durable elastomer compound engineered to withstand constant exposure to hydraulic oil, grease, high pressure, friction, and shifting temperatures. Its elasticity lets it hold a secure seal even under sustained vibration and heavy-duty operating cycles. Because it’s manufactured with tight dimensional tolerances, installation is straightforward and the fit is consistent, giving equipment owners confidence in long-term sealing reliability.
Fitting a genuine O-Ring rather than a generic substitute matters most where it counts — inside hydraulic pumps, valves, cylinders, and other tightly toleranced assemblies. Swapping out a worn seal at the right maintenance interval keeps hydraulic pressure stable, cuts down on oil loss, and protects the higher-cost components downstream from premature wear. For operators and technicians managing large excavators where downtime is costly, this small part carries outsized importance.
Technical Features
- Genuine Komatsu-spec sealing ring
- High-grade elastomer construction
- Strong resistance to hydraulic oils and lubricating fluids
- Withstands pressure, abrasion, and temperature swings without degrading
- Manufactured to precise tolerances for a consistent fit
- Holds its seal through vibration and continuous heavy-duty use
- Helps protect hydraulic system efficiency and component longevity
Compatible Machine Models
Komatsu Excavator
- PC1000SE-1
- PC1000SP-1
- PC1100-6
- PC1100SP-6
Alternative Part Numbers
Shop & Supply keeps the Komatsu 07000-B3038 O-Ring in stock, ready to ship as soon as your order comes in. We stock only genuine Komatsu spare parts for construction and industrial machinery, so customers can restore their equipment to original factory performance without compromise. Choosing a genuine part here means accurate fitment, a longer working life, and hydraulic seals you can rely on even in the toughest job-site conditions.
