3pcs Piston Rings Set for Air Compressor | Pneumatic Cylinder Replacement Kit

Restore the compression and efficiency of your air compressor or air pump with this 3-piece piston ring set. Designed to maintain a reliable seal between the piston and cylinder wall, these rings help reduce air leaks and keep your pneumatic equipment running smoothly.

This kit includes two balance rings and one seal ring, giving you the essential parts needed for a basic rebuild. The rings are precision-sized to fit a range of common cylinder diameters, making them a versatile choice for maintenance and repair work.

Each ring is manufactured to standard inner and outer diameter dimensions for a straightforward installation process. The surfaces are checked to be free of cracks, pores, or looseness, which supports a tight and dependable connection once installed.

Whether you are servicing a workshop compressor or a portable air pump, these replacement rings offer a practical solution for restoring performance. They are designed to be swapped in when the axial clearance of the old rings exceeds 0.13mm, helping you avoid unnecessary downtime.

Key Features and Benefits

- Standard size dimensions that make installation and removal convenient

• Smooth, defect-free surface that promotes a tight seal and consistent operation

• Includes both balance rings and a seal ring for a complete replacement set

• Compatible with multiple cylinder diameters for broad application use

Who Is This For

- DIY mechanics and technicians repairing home or garage air compressors

• Workshop owners maintaining pneumatic tools and air pump systems

• Anyone replacing worn piston rings when axial clearance reaches 0.13mm or more

• Users looking for a direct replacement set for common air compressor models

Usage Scenario

Marcus noticed his garage air compressor was losing pressure faster than usual. After checking the cylinder, he found the piston rings had worn down, creating a small gap. He ordered this 3-piece set, removed the old rings, and installed the new balance and seal rings. The compressor held pressure again, and his impact gun worked at full power for the rest of the afternoon.

Micro Comparison

Unlike buying single rings that may not match, this set provides two balance rings and one seal ring together, so you have everything needed for a full replacement. The rings are made to standard dimensions, reducing the guesswork during installation compared to generic or unlisted sizes.

Specifications

Type: Air Compressor Piston Ring

Compatible for: Air Compressor

Applicable cylinder diameters: 42mm / 47mm / 48mm / 51mm / 52mm / 65mm / 70mm / 80mm / 90mm

Replace when axial clearance exceeds: 0.13mm

Quantity: 3 pieces (2 balance rings + 1 seal ring)

Package Includes

- 3 x Air Compressor Piston Ring

Why You Will Love It

You get a complete set of replacement rings that fit multiple compressor sizes, saving you time searching for the right part. The rings are built to standard specifications, so you can install them with confidence and get your equipment back to work quickly.

Questions and Answers

Question: What cylinder diameters do these rings fit?

Answer: They fit cylinder diameters of 42mm, 47mm, 48mm, 51mm, 52mm, 65mm, 70mm, 80mm, and 90mm. Please choose the correct size for your compressor.

Question: How many rings come in this set?

Answer: The set includes 3 rings total: two balance rings and one seal ring.

Question: When should I replace the piston rings on my air compressor?

Answer: Replace the rings when the axial clearance between the piston and cylinder wall is greater than 0.13mm.

Question: Are these rings easy to install?

Answer: Yes, they have standard inner and outer diameter sizes, which makes installation and removal straightforward.

Question: Can I use these rings for an air pump as well as an air compressor?

Answer: Yes, they are suitable for both air compressors and air pumps with the listed cylinder diameters.