Description
Product Overview
The Lucstar AC ORing Kit is a comprehensive sealing solution engineered for modern automotive air‑conditioning systems. Each kit contains 100 precision‑molded nitrile (NBR) O‑rings and gaskets, organized into 12 distinct sizes that correspond to the most common compressor, valve core and line applications. The nitrile compound offers excellent resistance to gasoline, oil, water and typical refrigerant chemicals, ensuring long‑term integrity even under fluctuating temperature and pressure conditions. Packaged in a compact 10 × 7 × 1 inch box weighing 1.3 lb, the kit is lightweight yet robust, making it easy to store in a workshop or vehicle toolbox. Model V017A, first available May 10 2025, has earned a 4.6‑star rating from 31 verified buyers, reflecting its reliability and value.
Usage
Designed for both professional technicians and DIY enthusiasts, this kit excels in a variety of repair scenarios. Whether you are re‑sealing a leaking A/C compressor, replacing a valve core in a pressure washer, or fixing a water pump gasket, the assorted sizes ensure a perfect fit without the need for multiple specialty orders. The nitrile material tolerates exposure to gasoline and oil, making it suitable for fuel‑line repairs, while its water‑resistant properties protect against moisture ingress in humid climates. Ideal for passenger cars, light trucks, and even small marine engines, the kit streamlines maintenance tasks and reduces downtime.

Why Choose Us
Lucstar stands out in the automotive sealing market by offering a broader size range—12 models versus the typical 9 found in competing kits—covering virtually every standard A/C component. Each O‑ring is precision‑cut to maintain consistent wall thickness, which minimizes compression set and prolongs seal life. Our rigorous quality control includes dimensional verification and material testing to meet ISO‑9001 standards, guaranteeing that every ring performs as advertised. Additionally, the kit is backed by a responsive customer support team and a satisfaction guarantee, reinforcing confidence for both hobbyists and service centers.
Key Features
- 12 universal NBR O‑ring sizes covering most automotive A/C compressors and valve cores
- 100 high‑precision sealing washers packaged for easy identification and quick installation
- Oil, gasoline and water resistant material ensures durability in harsh engine environments
- Compact, lightweight box (10 × 7 × 1 in, 1.3 lb) for convenient storage and transport
- ISO‑9001 quality assurance with a 4.6‑star rating from verified customers
FAQ
What size O‑ring do I need for my specific vehicle?
Consult your vehicle’s service manual for the OEM part number, then match it to one of the 12 sizes listed in the kit’s size chart. The chart is printed on the inside of the box and includes common dimensions for popular makes such as Ford, Chevrolet, and Toyota.
Can these O‑rings be used with refrigerants other than R‑134a?
Yes. The nitrile material is chemically compatible with most automotive refrigerants, including R‑1234yf and R‑152a, making the kit suitable for newer eco‑friendly systems.
Is the kit suitable for non‑automotive applications?
Absolutely. The oil‑ and water‑resistant properties of the NBR O‑rings make them ideal for pressure washers, water pumps, and even small industrial hydraulic circuits.
How do I ensure a proper seal during installation?
Clean the mating surfaces thoroughly, apply a thin layer of compatible lubricant, and press the O‑ring evenly into the groove. Avoid over‑compressing, which can cause premature wear.
What is the warranty on this product?
Lucstar offers a 12‑month limited warranty covering manufacturing defects. If a ring fails due to material issues within this period, we will replace the affected pieces at no charge.







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