SKU: 31345930761

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

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Description

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

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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 31345930761

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4.2 ★★★★★
Based on 14 reviews
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Product Reviews
J
Verified Purchase
jubydo
Carnegie, US
★★★★★ 5
a swim through literary magic
Format: Kindle
Reading this book reminds me of jumping into a pool of water and the way the water tickles your skin as you descend into it, then surrounds you and totally encompasses you in its liquid wonder. There is so much here: beautiful metaphors that conjure up both visual images and the emotions that accompany it. Wonderful character development: presented with gentleness, respect and grace. An intricate plot that carries the reader along lightly and buoyantly, not calling attention to itself, but carrying through to the end. The book itself is a portrait of Theo, in keeping with the portrait style described within.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
E
Verified Purchase
EarlyLight
Boise, US
★★★★★ 5
Savor Theo -A Heart & Soul Dish
*No spoilers in this review I found this book to be an unexpected banquet for my soul. I don’t read fiction very often, but as I read Theo of Golden, I realized I am hungry for what this story offers. Based on its swift and growing popularity, I believe the world is hungry for the gift of Theo of Golden. When speaking on his book, Mr. Levi shared a quote from David Brooks, “ To write a book about kindness does not make you kind. To read a book about kindness does not make you kind… but to buy a book about kindness, that makes you kind.” 😄 This humor & humility — a “don’t take yourself too seriously” a welcoming accessibility is in the author and this book. I love this spirit in the story —so much so, if I could hug this book any tighter— it would be behind me. (borrowing generously from Groucho Marx ) I started to do research on Allen Levi - who wrote this gift. He chose well, hundreds of little choices, keeping him close to beauty, kindness, meaningful relationships and community. His choices of early morning devotionals and prayer and regular visits to schools and coffee houses, to write songs instead of watch tv, all feeding the character of the author. I believe you cannot share beyond where you have traveled. He has traveled to deep places. A definite Ode to Joy prior to offering Theo was to write about the last 365 days of his brother’s life they shared after a cancer diagnosis entered. His brother’s early exit from here and entrance into heaven, I believe, prepared the way for one of the greatest fiction writings of our day. Allen Levi’s habits to avoid technology and be fully present with the people in his life bleeds beautifully onto the characters of Golden. The environment is one which doesn’t talk about technology or politics. Just people connections. He firsts introduces us, then beautifully befriends us to a better way and a place, accessible to us if we would choose to allow mindful relationships to develop. All this making the community of Golden a place to cherish. Ultimately I believe the gift is to see Golden could be grown in a hometown, a neighborhood, with all people… It’s a heart posture- a posture that Theo bestows on the town. In my ideal world, the author would meet another great songwriter, poet, storyteller: Ray Hughes. Ray is another gift to humanity, in creativity, intelligence, and accessing heaven on earth through words. I believe there would be a powerful explosion of hope, humor and generosity in their meeting, subsequent friendship & collaboration. I’m dreaming here, and lifting a prayer to the heavens- it would be awesome!! With a grateful heart, I highly recommend Theo of Golden. Humbly submitted, Dawn Holley Author, 22 Keys To Joy for the easily distracted
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
A
Verified Purchase
Arty
Boise, US
★★★★★ 4
The end is only the beginning
Format: Kindle
Theo appears in a small fictional Georgia town named Golden. He’s a distinguished old man with a mysterious past. He’s a quiet observer; then he makes friends in a coffee house and there pursues a plan to personally gift every portrait drawing on the wall to the townsfolk simply pictured there. As an artist, I appreciated the detailed descriptions of each face, and then the invited dialogue with each person behind those drawings. The characters Theo gets to know are varied and storied. Of even more value to me was Theo’s visit to the studio of the originator of all the portraits. Layers start getting unpeeled in this tale. I started to highlight phrases when the motivation for doing the work got uncovered between them. There were times when I felt the main character was “too good” to be believable. I personally appreciated the subtle (and sometimes not so subtle) references to Theo being a Christ figure. But remember that Jesus was the one who said “woe to you when all men speak well of you”. The Theo who is pictured in this book, and the reactions of most around him is maybe a little too syrupy? A friend who is in my book club felt herself being “manipulated” when reading this book. I ponder that. There was a plethora of reactions to Jesus too, but I don’t think any honest quester ever felt manipulated. He let them walk freely away. For me the significance of each face was the key theme, and each face held sorrow. There are some beautiful lines in the book around this. The ambitions: true and false in the “art world” also the business world resonated also. The Pastor’s words during a funeral at the end were valuable. And the little girl’s imagination (prompted by Theo) of all the musical notes flying on their wings into the chandeliers so that they can sing again later was a wonderful metaphor. There are some excellent passages in this book if you remain in it. As one grandmother said in this tale: “Baby, they’s justice and they’s mercy. If you not sure what to do and you gotta choose one or the other, I say always go the mercy way. If you make a mistake, make it for mercy. Bad mercy don’t hurt nearly like bad justice and always remember, the eye of God can see.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
C
Verified Purchase
christine
Chelsea, US
★★★★★ 5
Theo of Golden
Format: Kindle
Amazingly beautiful. This is a deeply moving story of humanity. I saw many reviews and I didn't let the negative aspect impact my decision, in fact I think it motivated me to see for myself, I am so glad I did. Uplifting, inspiring and deeply moving. This is a book to be read more than once, its ment to be shared. A must read. Enjoy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
M
Verified Purchase
Megan
Los Angeles, US
★★★★★ 5
⭐️ A Beautifully Written Story That Stays With You ⭐️
Format: Paperback, Format: Paperback
Theo of Golden by Allen Levi is one of those rare books that quietly settles into your heart and lingers long after the final page. The writing is intelligent, thoughtful, and beautifully crafted, with storytelling that feels both timeless and deeply human. The characters are wonderfully developed and feel incredibly real, but Theo himself is unforgettable. I found myself learning so much from him along the way about life, people, kindness, and perspective. Allen Levi has a gift for creating a world that feels warm, meaningful, and genuine. This was a truly lovely read, full of wisdom, heart, and beautiful prose. An easy five stars for me. 📚✨
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026

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