Worldwide Shipping
New 6V3908 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.
Wrong Part?
We'll overnight correct part at no cost to you.
Description for 6V3908 Seal O Ring
â–¶Specification for 6V3908 Seal O Ring
â–¶Exact Fit Guarantee for 6V3908 Seal O Ring
â–¶| Dimensions | 4.37x4.37x1.97 |
|---|
-
Above and Beyond
Staff took care of issue that was nit created by them. Package was lost by UPS. Propel sent me another part Next Day Air to correct it. -
Excellent Customer service
-
This is a great company to work with. Our sales associate Anthony quickly located the correct part and sent it out right away.
-
Great customer service!
-
Great Customer Service!
Had some difficulties with the website. Contacted customer service. Once I communicated the issues I was having Steven worked through getting my order processed and making sure I got my receipt and all issues resolved. Perfect!
Frequently Asked Questions
What is the Caterpillar O-Ring 6V3908 and where is it used?
The 6V3908 is a Caterpillar O-ring seal used in hydraulic fittings, engine ports, and fluid line connections on various CAT machines. It provides a reliable pressure-tight seal to prevent leaks in both static and dynamic sealing applications. It is a commonly needed maintenance part during hydraulic system repairs and engine overhauls.
How often should O-rings be replaced on Caterpillar equipment?
O-rings do not have a fixed replacement interval but should be replaced any time a joint or fitting is opened during service. Additionally, inspect accessible O-rings during scheduled maintenance for signs of cracking, hardening, or weeping. In hot climates or harsh chemical environments, accelerated degradation is common.
Is the 6V3908 a high-quality aftermarket seal?
Yes. This O-ring meets or exceeds OEM specifications for dimensional accuracy, material hardness, and chemical resistance. It is manufactured to perform reliably in Caterpillar equipment's specific pressure and temperature ranges.
What CAT models use the 6V3908 O-Ring?
This O-ring fits a variety of Caterpillar machines depending on the joint or fitting it is used in. For exact model compatibility, cross-reference your machine's parts manual or reach out to Propel Parts ??? our team will help you confirm the right seal for your application.
What is the correct way to install an O-ring without damaging it?
Clean the O-ring groove thoroughly, inspect it for burrs or damage, lightly coat the new O-ring with the appropriate lubricant, and install it without twisting or stretching. Use fingers or a non-sharp tool to seat it properly. Never use screwdrivers or metal tools that could nick the sealing surface.
Can a damaged O-ring cause major equipment damage?
Yes. A failed O-ring in a hydraulic circuit can cause rapid fluid loss, leading to system pressure loss, inability to lift or control attachments, or overheating of hydraulic components. In an engine oil circuit, a failed O-ring can cause dangerous oil pressure loss. Address oil leaks promptly to avoid compounding damage.
Where can I find a full range of seals and gaskets for Caterpillar equipment?
For a comprehensive selection of sealing solutions, visit the seals and gaskets for heavy equipment category at Propel Parts, where you'll find O-rings, oil seals, metal face seals, overhaul kits, and more for CAT machines.
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.
We Make It Right
Wrong part? We'll make it right.Fast. At our expense.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
NO CORE OR EXCHANGE CHARGES
EASY RETURNS & FAST REFUNDS
