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How It Works

Find Your Model

Enter your hydraulic rock breaker make and model to instantly see the matching seal kit or diaphragm.

Perfect Fit Guarantee

Our high-quality aftermarket seal kits and diaphragms are precision-engineered for reliable performance and long life in demanding conditions.

Fast Shipping Nationwide

We ship the same day from our U.S. warehouse — get your parts fast and get back to work with minimal downtime.

Don't see your Seal Kit or Diaphragm? Reach out - We can get it for you!

Don't see your Seal Kit or Diaphragm? Reach out - We can get it for you!

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Why Contractors Choose Seal Kit City

Real-World Expertise — Founded by a technician with over 20 years of hands-on hydraulic breaker rebuilding experience

Exact Fit Aftermarket Parts — Precision-engineered seal kits and diaphragms designed to match or exceed OEM performance

Better Value — High-quality parts at significantly lower prices than OEM without sacrificing reliability

Proven Reliability — Trusted daily by contractors, rental fleets, and heavy equipment operators nationwide

Responsive Service — Dedicated support team ready to answer questions and resolve issues fast

Choose the Right Seal Kit for Your Hydraulic Rock Breaker

A guide that is designed for contractors, mechanics, and equipment operators who need the correct aftermarket seal kit the first time — saving downtime and money.

What our customers say

Real Stories from Real Breaker Pros

“4099 seal kit was excellent quality. Fit perfect and the service was fast and helpful. Will buy again.”

Mike D.

Lead Mechanic

“Kent KF45 seal kit was a perfect match. 400+ hours and still going strong.”

Steve P.

Rental Fleet Manager

“I’ve tried other aftermarket kits before and always had issues. Seal Kit City’s diaphragms and seals are holding up great under heavy use. Fast shipping too.”

Joe T.

Demolition Contractor