Best Air Conditioning O-Rings & O-Ring Kits of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2026

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Air Conditioning O-Rings & O-Ring Kits are essential components in the maintenance and repair of air conditioning systems. These small, circular rubber rings are designed to create a tight seal between various components of an AC system, preventing refrigerant leaks and ensuring optimal performance. O-Ring Kits typically include a variety of sizes and types of O-rings to accommodate different components and systems, making it easier for technicians to perform repairs and replacements quickly and efficiently. By using high-quality O-Rings and O-Ring Kits, AC systems can maintain their efficiency and longevity, keeping homes and businesses cool and comfortable year-round.

At a Glance: Our Top Picks

Dorman Power Steering Pump O-Ring Kit Cover #TOP 1
Dorman Power Steering Pump O-Ring Kit
ftb score rating icon 9.9
Genuine Honda Steering Switch Cover #TOP 2
Genuine Honda Steering Switch
ftb score rating icon 9.8
Performance Tool W5201 HNBR O-Ring Assortment (270-Pc) Cover #TOP 3
Performance Tool W5201 HNBR O-Ring Assortment (270-Pc)
ftb score rating icon 9.6

Top 10 Air Conditioning O-Rings & O-Ring Kits

#TOP 1

Dorman Power Steering Pump O-Ring Kit

926-157
Black
Dorman Power Steering Pump O-Ring Kit Cover
Dorman 926-157 Power Steering Pump O-Ring Kit Compatible with Select Acura/Honda Models

The Dorman 926-157 Power Steering Pump O-Ring Kit is available in metric and standard sizes with a wide range of diameters and thickness. It comes in various piece counts and can be used for household, industrial, and commercial purposes. To ensure a proper fit, input the make, model, and trim level into the garage tool.

What We Like
Available in both metric and standard sizes
Conveniently packaged in various piece counts for small and large projects
Suitable for household, industrial, and commercial uses
#TOP 2

Genuine Honda Steering Switch

35130-SAA-J51
Regular
Genuine Honda Steering Switch Cover
Genuine Honda 35130-SAA-J51 Steering Switch

Get the Genuine Honda 35130-SAA-J51 Steering Switch, a durable and best quality OEM factory part that ensures exact fit for specific Honda Accord, Civic, CR-V, Odyssey models. This ignition starter switch is not an aftermarket part, making it the ideal choice for restoring your vehicle's factory condition performance.

What We Like
Durable and exact fit
Genuine OEM factory part
Best in quality
#TOP 3

Performance Tool W5201 HNBR O-Ring Assortment (270-Pc)

W5201
Green
Performance Tool W5201 HNBR O-Ring Assortment (270-Pc) Cover
Performance Tool W5201 HNBR O-Ring Assortment in Organizing Case for Vehicle and Tool Repair (270-Pc)

The Performance Tool W5201 HNBR O-Ring Assortment is perfect for applications requiring higher resistance to chemicals and higher temperatures than NBR. This hydrogenated nitrile butadiene assortment is suitable for high dynamic loads and is abrasion resistant. It includes 270 O-rings in a variety of sizes that fit common anchors on Honda, Toyota, GM, Ford, Chrysler, and many other makes.

What We Like
Durable material suitable for high dynamic loads and abrasion resistant
Includes 270 O-rings in a variety of sizes
Compatible with common anchors on many makes of vehicles
#TOP 4

Four Seasons 26738 A/C System Seal Kit

Four Seasons
26738
Four Seasons 26738 A/C System Seal Kit Cover
Four Seasons 26738 O-Ring & Gasket Air Conditioning System Seal Kit

The Four Seasons 26738 A/C System Seal Kit includes O-rings and gaskets to help seal your air conditioning system. With a weight of only 0.045 kilograms and dimensions of 12.7 H x 1.27 L x 12.446 W (centimeters), this kit is easy to handle and install. It is part number 26738 and is categorized under Air Conditioning O-Rings & O-Ring Kits, making it a reliable choice for your air conditioning needs.

What We Like
Includes O-rings and gaskets for sealing your A/C system
Lightweight and easy to handle
Compact size for convenient storage
#TOP 5

carleef 45PCS Car AC Gasket Kit

Car AC Gasket Kit
Black
carleef 45PCS Car AC Gasket Kit Cover
45PCS Car AC Gasket Kit,Versatile AC Seal Kit for Fixing Car Air Conditioning Compressor,Bumper,Door Panel,Universal AC O Ring Kit Car Accessories for Car Truck SUV

The carleef AC Gasket Kit offers 45 versatile gaskets in various sizes, making it easy for you to find the right fit for your car’s air conditioning compressor. This kit is designed to meet daily replacement needs, so you can keep spares handy or share them with others. The assortment includes different washer and spacer sizes, ensuring compatibility with many vehicle models. Made from thickened metal rings and rubber washers, these gaskets resist oil, pressure, and wear, which means they last longer and perform reliably. With this kit, you get durable, high-quality parts that help prevent leaks and maintain your AC system’s efficiency.

What We Like
Variety of gasket sizes
Durable metal and rubber materials
Prevents oil and water leaks
Includes enough parts for daily use
Easy storage with labeled box
#TOP 6

POVAST Car AC Compressor Seals O-Ring

V02011
Green
POVAST Car AC Compressor Seals O-Ring Cover
POVAST Car Air Conditioning Compressor Seals O-Ring

POVAST Car AC Compressor Seals O-Ring consists of 18 sizes of green rubber O-rings that can be used in auto car vehicle air conditioning compressor to prevent leaks of air, oil, gas, and water. The package includes 270PCS of rubber O-rings in one box, which is suitable for pump, faucet, pressure washer, and car repairs.

What We Like
Diverse sizes of O-rings
Prevents air, oil, gas and water leaks
270PCS rubber O-rings in one box
#TOP 7

ESEWALAS 270 Pieces Seal Gasket Washer

345LSMFQ001
Green
ESEWALAS 270 Pieces Seal Gasket Washer Cover
270 Pieces Seal Gasket Washer,O Ring Assortment Set Kit,Car Air Conditioning AC O Ring Kit,Sealing ORings Gasket Assortment Set,Rubber Washer Orings for A/C Professional Plumbing

The ESEWALAS Gasket Washer Kit is a high-quality assortment set of O-rings made from durable rubber material. These O-rings offer excellent corrosion resistance, sealing performance, and heat resistance, making them ideal for various applications. Whether you need to seal automotive air conditioning systems, water pumps, or household appliances, this kit has got you covered. With 270 pieces in 18 different sizes, you'll have the right O-ring for almost any job. The convenient packaging, including a transparent plastic box with separate small grid spaces, allows for easy organization and portability. Say goodbye to searching for the right O-ring and enjoy the convenience of having a comprehensive set at your fingertips.

What We Like
High-quality rubber material
18 different sizes
Convenient packaging
#TOP 8

Mopar Engine Oil Filter Adapter O-Ring Kit 68191356AB

68191356AB
Black
Mopar Engine Oil Filter Adapter O-Ring Kit 68191356AB Cover
Mopar Engine Oil Filter Adapter O-Ring Kit - 68191356AB (OEM Replacement Part for Select Models and Years of Chrysler, Dodge, Jeep, and Ram Vehicles)

The Mopar Oil Filter O-Ring Kit is designed to fit a wide range of Chrysler, Dodge, Jeep, and Ram vehicles, ensuring compatibility with many models from 2014 to 2021. This kit includes all the necessary O-rings to replace worn or damaged seals on your engine oil filter adapter, helping maintain proper engine performance and preventing leaks. The kit replaces the previous part number 68191356AA, offering an updated and reliable solution. Since these are genuine Mopar OEM parts, you can trust that they will restore your vehicle’s factory-level performance and fit perfectly, giving you peace of mind with every oil change.

What We Like
Wide vehicle compatibility
Includes essential O-rings
Updated replacement part
OEM quality assurance
Restores factory performance
#TOP 9

Captain O-Ring 91319-PAA-A01 Replacement (3 Pack)

91319-PAA-A01
Black
Captain O-Ring 91319-PAA-A01 Replacement (3 Pack) Cover
Captain O-Ring – Replacement 91319-PAA-A01 O-Ring for Honda (3 Pack)

The Captain O-Ring 3-Pack offers you three durable replacement O-rings designed to fit Honda vehicles with part number 91319-PAA-A01. Made from rubber that matches the original equipment manufacturer’s standards, these O-rings ensure a reliable seal that lasts, helping keep your vehicle running smoothly like new. Before ordering, it’s important to check your vehicle’s service manual to confirm you need this specific part number, so you get the perfect fit. Each pack includes three O-rings, giving you extra pieces for future needs or multiple repairs. These O-rings are proudly assembled in the USA and backed by a manufacturer warranty for added peace of mind.

What We Like
OEM spec rubber
Three O-rings per pack
Long-lasting durability
Assembled in USA
#TOP 10

NBRINGO 485 PCS Metric AC O Ring Kit

Green
NBRINGO 485 PCS Metric AC O Ring Kit Cover
NBRINGO 485 PCS Metric AC O Ring Kit - Automotive A/C System Seal Kit Compatible with R12 and R134a Refrigerants for Car AC Compressor, Condenser & Air Conditioning Lines (Green)

The NBRINGO AC O Ring Kit offers a large selection of green O-rings in various sizes, all organized in a sturdy clear case with separate compartments. This makes it easy for you to find the exact seal you need without hassle. Made from durable NBR material, these O-rings resist oils and coolants, ensuring they last longer in your car’s AC system. The kit is designed for use with R134a freon systems but also works with other refrigerants like R12 and R22, making it versatile for many automotive and household repairs. With 18 different sizes included, you’re prepared for almost any air conditioning repair task.

What We Like
Wide size assortment
Durable NBR material
Clear organized case
Compatible with multiple refrigerants
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Do you need special O-rings for air conditioning?

Yes, for air conditioning applications, it is recommended to use HNBR (Hydrogenated NBR) O-rings. HNBR O-rings have good compatibility with various refrigerants and oils commonly used in air conditioning systems, such as mineral oil, PAG, POE, R-12, R-134a, and R-1234yf.

2. What are the two types of O-rings used in air conditioning systems?

The two types of O-rings commonly used in air conditioning systems are black O-rings and green O-rings. Black O-rings are typically used for auto air conditioning applications, while green O-rings are made of hydrogenated Nitrile (HNBR), also known as highly saturated Nitrile. HNBR O-rings offer excellent compatibility with air conditioning refrigerants and oils.

3. What are AC compressor O-rings?

AC compressor O-rings are seals used in the air conditioning system to create a tight seal between different components. These O-rings and gaskets are designed with refrigerant-specific materials to ensure a long-lasting seal. They are commonly used at the connections between hoses and components like the compressor, condenser, accumulator, and evaporator.

4. What is the best O-ring material for refrigerant?

Neoprene is a commonly used O-ring material for sealing refrigerants in refrigeration and air conditioning units. Neoprene O-rings offer excellent resistance to tears, flexing, sunlight, and weathering. However, it is important to note that neoprene O-rings should not be used with certain chemicals or substances like Skydrol, amines, esters, ethers with low molecular weight, hot hydrofluoric acids, and hot water or steam.

5. How much does it cost to replace AC O-rings?

The cost of replacing AC O-rings can vary depending on the specific components and labor involved. A pack of O-rings typically costs around $10. The labor cost for O-ring replacement can range from $150 to $500. However, the total cost may increase if additional components need to be replaced.

6. How do you match an O-ring?

To match an O-ring, it is best to measure the cross-section (CS) and inside diameter (ID). A caliper or micrometer can be used to measure the cross-section accurately. If a caliper is not available, other sizing tools can be used to get a close estimate of the O-ring size.

7. How much does it cost to replace the O-ring on a car AC unit?

The cost of replacing the O-ring on a car AC unit can vary depending on the specific components and labor involved. A pack of O-rings typically costs around $10. The labor cost for O-ring replacement can range from $150 to $500. Additionally, if other components, such as the compressor, need to be replaced, the total cost may increase further.

Editor's Notes

During our air conditioning o-rings & o-ring kit research, we found 24 air conditioning o-rings & o-ring kit products and shortlisted 10 quality products. We collected and analyzed 31,176 customer reviews through our big data system to write the air conditioning o-rings & o-ring kits list. We found that most customers choose air conditioning o-rings & o-ring kits with an average price of $7.84.

The air conditioning o-rings & o-ring kits are available for purchase. We have researched hundreds of brands and picked the top brands of air conditioning o-rings & o-ring kits, including Dorman, Honda, Performance Tool, Four Seasons, carleef. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.