Worldwide Shipping
New 1H7339 Seal O Ring Replacement suitable for Caterpillar Equipment
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Secure Checkout
•
Trusted Since 2012
Details
Description for 1H7339 Seal O Ring
â–¶Specification for 1H7339 Seal O Ring
â–¶Exact Fit Guarantee for 1H7339 Seal O Ring
â–¶Reviews
Customer Reviews
Fast response and answers all my questions in a polite manner. Highly recommend.
Customer service was great! There was a small problem with the part and they responded quickly and respectfully until was resolved! Highly recommended
Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine
helpful and professional.
quick and professional service.
Fast response and very attentive! Thanks Deb.
Our CSR for Dymax Inc., Deb, has been extremely helpful and consistently provides quick, accurate information regarding parts and inventory. When we encounter difficulties finalizing transactions through the internal website, she is able to promptly generate quotes and provide an external, secure method for payment. Her responsiveness and willingness to assist play a key role in supporting our team’s success.
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.
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!
Good Stuff.
We have had a couple shipping issues, but each time they made it right and we ended up getting what we need. Quality parts at half the price of OEM.
They were great to deal with
Product Questions
Frequently Asked Questions
What is the Caterpillar 1H7339 Seal O-Ring used for?
The 1H7339 Seal O-Ring is a circular sealing component designed to prevent fluid or air leaks in heavy equipment systems. It creates a tight seal between mating components so that hydraulic fluid, engine oil, or coolant stays contained within the system. By maintaining proper pressure and preventing contamination, this small part helps ensure reliable operation of Caterpillar machinery.
Is the 1H7339 O-Ring compatible with Caterpillar equipment?
Yes. The 1H7339 Seal O-Ring is engineered as a direct replacement for Caterpillar equipment that uses this part number. To ensure compatibility:
- The part is designed to match OEM specifications
- Fitment can be verified through Caterpillar's Service Information
> System (CAT SIS) before shipping To ensure the 1H7339 is the correct fit for your machine, cross-reference the part number with your equipment manual or parts catalog. If you have any doubts, the Propel Parts team is available to point you in the right direction.
Is this an OEM Caterpillar part or an aftermarket replacement?
This product is an aftermarket replacement O-Ring manufactured to meet U.S. OEM specifications for quality and performance. Key advantages include:
- Engineered to function like the original Caterpillar seal
- Manufactured with strict quality checks
- Designed for durability in demanding equipment environments
This provides a reliable replacement option while keeping maintenance costs manageable.
What material is typically used in the 1H7339 O-Ring?
That\'s correct. The 1H7339 replacement is produced to meet OEM requirements and deliver the performance expected in heavy equipment applications. For any fitment questions, contact Propel Parts directly.
- Strong resistance to oils and hydraulic fluids
- Good durability in harsh operating conditions
- Reliable sealing performance across a range of temperatures
What are the typical specifications or dimensions of the 1H7339 Seal O-Ring?
Approximate specifications for the 1H7339 O-Ring include:
- Inner diameter: \~2.98 inches
- Cross-section diameter: \~0.14 inches
- Bore diameter: \~3.25 inches
- Standard dash size: −234
Precise dimensions help ensure the O-Ring fits correctly into its groove and provides effective sealing.
How do I know when this O-Ring should be replaced?
O-Rings can wear out due to heat, pressure, and fluid exposure. Signs that replacement may be needed include:
- Oil, coolant, or hydraulic leaks
- Loss of system pressure
- Visible cracking, flattening, or hardening during inspection
Replacing worn seals during routine maintenance can help prevent more serious equipment issues.
What warranty or purchase protections come with this part?
Questions about warranty or returns on the 1H7339? Contact Propel Parts and the team can walk you through what\'s covered and how to proceed if there\'s an issue with your order.
- 1-year warranty against manufacturing defects
- Exact Fit Guarantee® verification before shipping
- Same-day shipping for weekday orders before the cutoff time
- No core charge required for purchase
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.
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.