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New 5H7704 Seal O Ring Replacement suitable for Caterpillar Equipment
- New Seal O Ring Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
Exact Fit Guarantee
This part is guaranteed to fit your machine.
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Description for 5H7704 Seal O Ring
â–¶Specification for 5H7704 Seal O Ring
â–¶Exact Fit Guarantee for 5H7704 Seal O Ring
â–¶| Dimensions | 4.33x4.33x0.31 |
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He resolved all my doubts and gave me clear solutions.
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I was able to source my parts with propelparts in one click pay and have the shipment worked on under 60 minutes, with various options of couriers i received my shipments in less than 10days
The parts a durable and efficient -
I own old cat bulldozers D8k,D8H,D8N that required frequent repairs and servicing. it was erratic and practically cumbersome to keep them running without constant supply of reliable
and affordable spares in Uganda a third world country however,since I started dealing with propel parts US,my bulldozers have earned reliability and efficiency in providing high quality services to clients and making me a great dependable construction company in earth moving.
My shipments are always handled expeditiously and delivered in record time to Uganda this is awesome from Propelparts.
My business is booming by the clock for finding the best partner in Propelparts. -
Very helpful. Every question or request I had was answered quickly. I didn't have a parts book for my excavator but that was no problem for them. If you need parts for your Cat, give them a shot.
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Excellent customer service and parts.
You guys have always gave excellent customer service!!! Very prompt responsiveness. Warranty services are superb. I have been using them for quite awhile now on equipment I have. Always great prices for parts! Keep up the great work guy's
Frequently Asked Questions
What is the Caterpillar 5H7704 / 6L8166 seal O-ring used for?
The 5H7704 / 6L8166 seal O-ring is designed to create a secure seal between connected Caterpillar equipment components. It helps prevent fluid leaks, pressure loss, and contamination in hydraulic and engine systems.
What are common signs of a failing O-ring?
Common signs include fluid leakage, cracking, flattening, swelling, or reduced flexibility. Replacing worn O-rings early can help prevent costly equipment downtime.
Is the 5H7704 / 6L8166 O-ring compatible with multiple Caterpillar machines?
- Yes, this seal O-ring may fit a variety of Caterpillar equipment applications depending on the machine model and system configuration.
- Check your manual or reach out to Propel Parts for help verifying fitment.
Why is proper sealing important in heavy equipment systems?
Proper sealing helps maintain system pressure, protects internal components from contamination, reduces fluid loss, and supports reliable equipment performance.
Can harsh operating conditions affect O-ring lifespan?
Yes. Exposure to high temperatures, pressure changes, chemicals, and demanding work environments can gradually reduce sealing effectiveness over time.
Are aftermarket replacement O-rings reliable?
Yes. High-quality aftermarket sealing components that meet or exceed OEM specifications can provide dependable sealing performance and durability in heavy equipment applications.
Should O-rings be replaced during preventive maintenance?
Yes, replacing worn sealing components during routine maintenance can help reduce unexpected leaks and improve equipment reliability.
Are there related Caterpillar sealing components commonly used in similar applications?
Yes, parts such as the Caterpillar 5K9090 seal O-ring are commonly used in related hydraulic and engine sealing applications.
Shipping
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.
Easy Returns
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.
Warranty
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.
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
Know your part number? Simply place your order.
Not Sure?
Place your order, then send us your serial number before it ships.
We'll verify fit.
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1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
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EASY RETURNS & FAST REFUNDS
