Best Air Conditioning O-Rings & O-Ring Kits of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 6, 2025

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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

ESEWALAS 270 Pieces Seal Gasket Washer Cover #TOP 1
ESEWALAS 270 Pieces Seal Gasket Washer
ftb score rating icon 9.9
ESEWALAS 495-Piece AC O-Rings Kit Cover #TOP 2
ESEWALAS 495-Piece AC O-Rings Kit
ftb score rating icon 9.8
Beduan 270pcs Compressor O Rings Kit Cover #TOP 3
Beduan 270pcs Compressor O Rings Kit
ftb score rating icon 9.6

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

#TOP 1

ESEWALAS 270 Pieces Seal Gasket Washer

Reswish
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 2

ESEWALAS 495-Piece AC O-Rings Kit

Reswish
661DJMFQ001
Black
ESEWALAS 495-Piece AC O-Rings Kit Cover
ESEWALAS 495 Pieces Automotive AC O-Rings Kit,SAE Metric O Ring Kit with O-Ring Pick & Installation Tools,Car Air Conditioning AC Rubber O-Ring Gasket Assortment Set for Car Repair

The ESEWALAS O-Ring Kit offers a comprehensive assortment of 495 high-quality O-rings, ensuring you have the right size for almost any repair task. Made from durable hydrogenated nitrile rubber, these rings resist oil, water, and various acids, providing reliability in demanding situations. With 36 different sizes neatly organized in a labeled plastic box, you can easily find the exact O-ring you need without the hassle of sorting. Additionally, the included O-ring tool simplifies the removal and installation process, making your repairs quicker and more efficient.

What We Like
Large quantity of O-rings
Durable and resistant materials
36 sizes for versatile use
Convenient organization and labeling
Includes helpful installation tools
#TOP 3

Beduan 270pcs Compressor O Rings Kit

1yf-05310-ork
Green
Beduan 270pcs Compressor O Rings Kit Cover
Beduan 270pcs Compressor O Rings Kit 18 Sizes Car Air Conditioning AC Rubber O-Ring Gasket Assortment Set (Green)

The Beduan 270pcs Compressor O Rings Kit includes 18 different sizes of Nitrile Butadiene Rubber (NBR) O-rings that can withstand temperatures from -40°C to 120°C. These rubber gaskets are corrosion-resistant and provide a good seal to prevent water leakage in various applications such as oil lines, fuel plumbing, and machinery. Additionally, the set comes in a plastic organizer case, making it easy to select the required size without sorting through them.

What We Like
Includes 18 different sizes of O-rings
NBR material with high temperature and pressure resistance
Wide range of applications for various equipment
#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

YUQGAOP 270 Pcs O-Ring Kit

YUQGAOP
MFQ270
Green
YUQGAOP 270 Pcs O-Ring Kit Cover
270 Pcs Car Air Conditioning O Ring Kit, Seal Rubber O-Rings Assortment O-Ring Assortment Set for Car Repair, Plumbing, Air or Gas Connections

The YUQGAOP O-Ring Kit is designed for reliable car repair and maintenance. Made from high-quality rubber, these O-rings are built to last, resisting wear and tear over time. They fit perfectly into car air conditioning compressors, ensuring a tight seal that prevents leaks. These seals are also temperature resistant, maintaining their performance in both hot and cold environments. With standard sizing, installation is a breeze, allowing you to easily replace old O-rings and keep your AC system running smoothly.

What We Like
Durable rubber construction
Leak prevention
Temperature resistant
Easy installation
#TOP 6

OFBAND 60PCS AC O Ring Kit

OFBAND
AC O Ring Kit
Red, Green, Black
OFBAND 60PCS AC O Ring Kit Cover
60PCS AC O Ring Kit&AC Seal Kit for AC Compressor,O Ring Assortment Kit for Air Conditioning Parts Replacement,O Ring Kit with Multiple Sizes of O Rings Gasket Fits Most Cars

The OFBAND AC O Ring Kit is a comprehensive 60-piece assortment that covers nine different sizes, ensuring you have the right fit for various automotive air conditioning systems. Made from durable rubber and galvanized steel, these rings are built to last and resist wear, rust, and temperature changes. Their precise engineering guarantees reliable sealing, enhancing the efficiency of your AC system and minimizing leaks. Plus, the easy-to-replace design allows you to quickly swap out damaged seals, ensuring your vehicle maintains optimal cooling performance with minimal downtime.

What We Like
Comprehensive size variety
Durable materials
Enhanced AC efficiency
Easy to replace
Organized storage
#TOP 7

Lucstar 85PCS A/C Seal Kit

V003A
85PCS
Lucstar 85PCS A/C Seal Kit Cover
Lucstar Car A/C Compressor Seal Gasket Kit 85PCS Sealing Washers for Automotive Air Conditioning Replacement, A/C O Ring Assortment Kit Valve Core Service Flush Kit, Gasket Sealer R 134a

The Lucstar A/C Seal Kit is designed to help you maintain a gas-tight seal between your vehicle's air conditioning components. With 85 pieces in various sizes, this kit ensures you have the right fit for almost any compressor model. Made from high-quality rubber and metal, these gaskets offer durability and performance comparable to original factory parts. You’ll find it easy to organize and select the right gasket thanks to the clear plastic box and included picture guide. This kit also comes with essential items like refrigerant and valve cores, making it a convenient choice for any auto mechanic.

What We Like
Comprehensive size assortment
High-quality materials
Easy organization
Includes essential accessories
#TOP 8

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 9

bylikeho A/C O Ring Kit

bylikeho
1726KTYSJMFJ001
Silver
bylikeho A/C O Ring Kit Cover
bylikeho A/C O Ring Kit,Car Accessories Gasket,O Ring Assortment Kit,AC O Ring Kit,60pcs AC Seal Kit,A/C Compressor Seal Kit,Automotive Replacement Seal Gasket,AC Gasket Kit

The bylikeho A/C Seal Kit is an essential replacement for your vehicle's air conditioning system. With a variety of gaskets available in different sizes and thicknesses, you can easily find the right seal for both low and high-pressure applications. The high-quality materials ensure durability and resistance to high temperatures, providing peace of mind during use. Packaged in a clear case, locating the right size is quick and straightforward, saving you time during repairs. Plus, the brand offers responsive customer service to address any issues you may encounter, ensuring a smooth installation process.

What We Like
Multiple gasket sizes available
High-quality materials used
Convenient clear packaging
Responsive customer support
#TOP 10

496 Pieces Automotive AC O-Rings Kit by Easily

Easily
496 o ring kit
Green
496 Pieces Automotive AC O-Rings Kit by Easily Cover
496 Pieces Automotive AC O-Rings Kit,SAE Metric O Ring Kit, Car Air Conditioning AC Rubber O-Ring Gasket Assortment Set for Car Repair

The Easily AC O-Rings Kit features 36 different sizes to ensure you have the right fit for your automotive needs. This organized kit comes in a plastic case, making it easy to find the size you need without the hassle of sorting through various parts. Made from durable Nitrile (NBR) material, these O-rings are resistant to high temperatures, oils, and UV exposure, ensuring longevity and reliability. With a wide range of applications, from car air conditioning systems to household appliances, this kit is versatile and essential for any DIY enthusiast or professional mechanic.

What We Like
Variety of sizes available
Durable Nitrile material
Organized storage case
Wide application range
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 15,273 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 $10.51.

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 Reswish, beduan, Four Seasons, YUQGAOP, OFBAND. The seller of top 1 product has received honest feedback from 616 consumers with an average rating of 4.9.

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.