O-Ring-7861-91-4220

Product Advantages

1. OEM Precision Matching：Produced in strict accordance with the original factory dimensions and tolerances of Komatsu SAA4D95LE engine, perfectly fitting the sealing groove without additional modification during installation, reducing assembly errors and rework rates.

2. High-quality & Durable Material：NBR has excellent oil resistance, wear resistance and anti-aging performance; the FKM version enhances chemical resistance and high temperature resistance, with a service life extended by more than 30% compared with ordinary O-rings, reducing replacement frequency and maintenance costs.

3. Stable & Reliable Structure：Integrally molded without joints, with uniform elasticity and strong resistance to compression set. Under pressure, the sealing effect is improved with the increase of pressure, suitable for a variety of sealing scenarios.

4. Harsh Working Condition Adaptation：Specially tested for dust, vibration, sudden temperature change and other harsh conditions, with stable sealing performance in mines, construction sites and other harsh environments, ensuring the continuous and reliable operation of the engine.

5. High Cost Performance：Performance is close to that of original parts with more favorable prices, reducing procurement costs; it also cuts down downtime losses caused by sealing failure and improves equipment attendance rate.

Installation & Maintenance Tips

1. Clean the sealing groove and sealing surface before installation, remove oil stains, rust and residues of old seals to ensure no impurities or damage.

2. Avoid twisting and scratching the O-ring during installation, a small amount of clean engine oil can be applied for auxiliary assembly to ensure complete fit with the sealing surface.

3. Regularly check the status of the O-ring, and replace it in time if aging, cracks, damage or leakage are found to avoid the expansion of faults.