New 2033940 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

$0.90

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
2033940CTP
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Description for 2033940 Seal O Ring

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This aftermarket Caterpillar 2033940 Seal O Ring is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Seal O Ring.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 2033940 Seal O Ring

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Replacement Part Number(s): 203-3940
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.01 LBS | 0.00 KG
Dimensions: 0.79 x 0.79 x 0.08 (inches)
Condition: New

Exact Fit Guarantee for 2033940 Seal O Ring

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Looking for a reliable replacement Caterpillar 2033940 Seal O Ring ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Dimensions 0.79x0.79x0.08
Customer Reviews
  1. 100%
    Original Review (Portuguese)
    Muito bom atendimento
    Ótima empresa

    English Translation
    Very good service.
    Excellent company.
  2. 100%
    100% recommend it is a good parts by par for five years and everything is good
  3. 100%
    Quality Caterpillar parts
    Very fast delivery and respons from Propel Parts
    This is my second time that I bought something from it, first time delivery time was in one week from US to Serbia
  4. 100%
    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!
  5. 100%
    Buen servicio y atenciĂłn
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Frequently Asked Questions

Product

What is the New 2033940 Seal O Ring used for?

The 2033940 Seal O Ring replacement is designed to provide a tight and reliable sealing solution in Caterpillar equipment systems. It helps prevent fluid leaks, maintain hydraulic pressure, and ensure smooth machine operation in demanding working environments. This part is ideal when you need a durable sealing solution that meets OEM specifications for performance and reliability.

Is this Seal O Ring compatible with my Caterpillar machine?

Compatibility depends on your equipment model and system requirements. This seal O-ring is commonly used across multiple Caterpillar machines, but fitment may vary.

If you are unsure, don’t hesitate to reach out to Propel Parts for help verifying fitment.

What material is used in this Seal O Ring?

The 2033940 Seal O Ring is manufactured using high-quality elastomer materials designed for strength, flexibility, and resistance to heat, oil, and pressure. It is built to perform in heavy-duty environments and delivers long-lasting sealing efficiency in hydraulic and engine applications.

Can this O-ring handle high-pressure hydraulic systems?

Yes, this seal is engineered for high-pressure applications commonly found in construction and heavy machinery. It maintains sealing integrity even under extreme operating conditions, helping reduce leakage risks and downtime.

Why should I choose an aftermarket Seal O Ring replacement?

Choosing a premium aftermarket seal O-ring is a cost-effective solution without compromising performance. These parts are designed to meet or exceed OEM expectations and offer reliable durability in demanding conditions.

When replacing, always choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to ensure long-term performance.

How do I know when to replace my Seal O Ring?

You should consider replacement if you notice:

  • Hydraulic or oil leakage
  • Reduced system pressure
  • Visible wear, cracks, or flattening of the seal

Regular maintenance checks help prevent equipment failure and improve machine lifespan.

Does Propel Parts offer support for installation or fitment?

Yes, Propel Parts provides assistance in selecting the right replacement parts. If you are still unsure, reach out to Propel Parts, our team will be happy to help you verify if this part fits your equipment.

Where can I find other sealing and hydraulic components?

You can explore a wide range of related components in our catalog, including engine systems and sealing solutions.

For example, browse our engine parts category to find additional components that support heavy-duty Caterpillar equipment performance.

Also, for specialized sealing components, you can explore the hydraulic system parts section for more precision-engineered solutions designed for durability and efficiency.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or 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.