5P6605 Seal Stock for CAT Equipment
- New Seal Stock Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 5P6605 Seal Stock
â–¶Specification for 5P6605 Seal Stock
â–¶Exact Fit Guarantee for 5P6605 Seal Stock
â–¶| Dimensions | 39.37x1.57x1.57 |
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I put 2 of the same orders in due to a web page error and shortly after I was contacted by Deb from customer service asking if I meant to place both orders. She was very helpful, the email was very well written and it genuinely made me feel better about the whole experience. She resolved the issue quickly and with there not being much of customer service these days I was very happy so see that is not the case everywhere!!!
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They are great !
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100% recommend it is a good parts by par for five years and everything is good
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Buen servicio y atención
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Online order.
I had a good experience this morning I placed an online order and everything went smoothly. The staff at propel parts has always been helpful in the past when I have been looking for harder to find parts or something that wasn’t listed online.
Frequently Asked Questions
What is the purpose of the 5P6605 seal stock for CAT equipment?
The 5P6605 seal stock is designed to provide reliable sealing in various Caterpillar equipment systems. It helps prevent fluid leaks, protects internal components from contaminants, and supports efficient operation by maintaining proper pressure and lubrication within the system.
How do I install the 5P6605 seal stock correctly?
Follow these general steps for proper installation:
- Power down the equipment and allow it to cool
- Relieve any system pressure according to the equipment manual
- Remove the worn or damaged seal material
- Clean the surface thoroughly to ensure proper adhesion and sealing
- Cut and fit the 5P6605 seal stock as required for your application
- Install securely and reassemble components
- Restart the equipment and check for leaks or irregular performance
Always refer to your equipment manual for specific installation instructions.
Which Caterpillar machines are compatible with the 5P6605 seal stock?
The 5P6605 seal stock is used across a variety of Caterpillar equipment applications, depending on system requirements and dimensions. Compatibility varies by machine model and usage. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 5P6605 seal stock meet performance standards?
Yes, the 5P6605 seal stock is manufactured to meet OEM specifications, ensuring dependable sealing performance and durability. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to maintain system integrity.
How often should seal stock be replaced in heavy equipment?
Replacement frequency depends on operating conditions, such as temperature, pressure, and exposure to contaminants. In demanding environments, seals may wear faster and require more frequent inspection and replacement to avoid leaks and equipment downtime.
What are the signs that the seal stock needs replacement?
Common indicators include:
- Visible fluid leaks
- Loss of system pressure
- Cracks, wear, or deformation in the seal material
- Increased contamination in fluids
- Reduced equipment efficiency
Routine inspections can help identify these issues early and prevent costly repairs.
Why is proper sealing important in Caterpillar equipment?
Effective sealing is critical to prevent fluid loss and contamination, both of which can lead to premature wear of internal components. Proper sealing supports consistent performance, protects key systems, and helps extend the lifespan of your equipment.
Can I use aftermarket seal stock instead of original parts?
Yes, you can use premium aftermarket options as long as they meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to ensure reliable performance and long-term durability without compromising quality.

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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