New 8L2779 Seal O Ring Replacement suitable for Caterpillar Equipment
- New Seal O Ring Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 8L2779 Seal O Ring
▶Specification for 8L2779 Seal O Ring
▶Exact Fit Guarantee for 8L2779 Seal O Ring
▶| Dimensions | 0.51x0.51x0.08 |
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Great affordable option for aftermarket parts
Found Propel Parts while looking for parts to repair a D6C dozer that has been sitting for 20 years. Great parts, great prices, fast shipping and excellent customer service. -
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Great service affordable parts
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Frequently Asked Questions
What is the Caterpillar 8L2779 / 6L9882 seal O-ring used for?
The Caterpillar 8L2779 / 6L9882 seal O-ring is a high-quality aftermarket sealing component designed to help prevent leaks in heavy equipment hydraulic, fluid, and engine systems. It is manufactured to meet or exceed OEM specifications for dependable sealing performance.
What are the benefits of using the 8L2779 / 6L9882 seal O-ring?
A2.
- Helps prevent fluid and pressure leaks
- Designed for reliable sealing performance in demanding conditions
- Built from durable materials for extended service life
- Supports proper system efficiency and component protection
- Manufactured to meet or exceed OEM specifications
Is the 8L2779 / 6L9882 O-ring compatible with different Caterpillar equipment models?
Yes, this seal O-ring may fit multiple Caterpillar machines and assemblies depending on the application. Check your manual or reach out to Propel Parts for help verifying fitment.
What can happen if an O-ring becomes worn or damaged?
A damaged O-ring can lead to fluid leaks, contamination, pressure loss, and reduced system efficiency, which may contribute to premature component wear.
Does this O-ring meet OEM performance requirements?
Yes, this aftermarket replacement is designed to meet or exceed OEM specifications for fit, sealing capability, and durability.
Are related sealing components available from Propel Parts?
Yes. Propel Parts carries a variety of seals and sealing components for Caterpillar equipment. You can also check the Caterpillar Equipment Seal Link 7K9208 / 5P0071 for another related sealing solution.
Why is replacing worn seals important in heavy equipment maintenance?
Replacing worn seals helps maintain proper pressure, prevents leaks, protects nearby components, and supports reliable equipment operation with reduced downtime.

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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