Details
Description for 2303728 Seal O Ring
â–¶Specification for 2303728 Seal O Ring
â–¶Exact Fit Guarantee for 2303728 Seal O Ring
â–¶Reviews
Customer Reviews
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.
The customer care response was very awesome. It was more than what I expected
The customer care response was very effective and timely
The response time was amazing
The availability of most of the parts that I wanted was also very awesome
Thanks keep it up
Excelente atencion y refacciones de calidad
Having issue running my credit card, Steven was more than helpful to send me a payment link to complete my transaction!
Great Service!
Amazing service, emails answered very quickly with simple straight forward answers. Haven’t received the parts yet but ordering them was quick and easy.
Always helpful and great pricing
Australian buyer, sales where professional and very responsive with secure parts identification.
Highly recommend.
Bedrock Exploration Pty Lt, Australia
Customer Follow-Up After Delivery:
Thank you Deb and your colleague Anthony A for your help in supplying a replacement part which arrived in good time and is running smoothly.
I shall continue to use your services and recommend you to other remote miners, as your services and delivery times are better than our home-based suppliers.
With thanks again.
Regards, Gerard
Fast communication, and very Helpful!
Great customer services, the best
Product Questions
Frequently Asked Questions
What is the 2303728 seal used for?
The 2303728 is a sealing component that blocks fluid leakage and keeps dirt and debris out of the assembly. Reliable sealing is key to maintaining pressure and protecting internal parts.
How do I install the 2303728 seal?
A reliable installation of the 2303728 starts with inspection and ends with verification. Follow this process:
- Shut down and depressurize the system, then let it cool if needed
- Remove the old seal and clean the bore and shaft surfaces
- Inspect the sealing surface for scoring, pitting, or wear
- Lightly lubricate the 2303728 as directed and fit it square to the bore
- Seat it to the correct depth without distorting the lip, then check for leaks
Which Caterpillar machines is the 2303728 compatible with?
Compatibility for the 2303728 seal varies by machine and configuration, so cross-check it for your Caterpillar equipment before ordering. Please reach out to Propel Parts for help verifying fitment.
Does the 2303728 seal meet performance standards?
Yes. The 2303728 is engineered to meet OEM specifications for material, dimensions, and durability. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so the part performs the way it was designed to.
How often should the 2303728 be replaced?
The 2303728 is typically renewed during scheduled service or a related repair. In demanding, high-hour operation, inspect it more often to stay ahead of wear.
What are the signs of a worn or failing 2303728 seal?
Catching a failing 2303728 early prevents wider damage. The common warning signs include:
- Visible fluid leaks or seepage at the joint
- Loss of system pressure
- Contamination found inside the assembly
- A hardened, cracked, or torn sealing surface
Why is the 2303728 important, and what related parts work with it?
Keeping the 2303728 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 4S5879 Seal O-Ring and 7W1642 Gasket Ctp.
Shipping | Returns
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
Exact Fit Guarantee®
The right part — or we'll make it right.
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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.

