SB121TRF Diaphragm | Huilian Durable Excavator Breaker Part
Product Overview
The SB121TRF diaphragm by Huilian is a high-performance sealing component designed for hydraulic breaker and excavator applications. Built to OEM standards, this diaphragm ensures reliable operation, long service life and easy replacement — keeping your equipment productive on the jobsite.
Key Features
Precision Fit & Compatibility
Specifically shaped for SB121TRF applications, the diaphragm provides a snug, leak-free fit. It works seamlessly with common breaker models, reducing oil leakage and maintaining stable hydraulic pressure.
Durable Material & Heat Resistance
Manufactured from High Quality elastomer compounds, the SB121TRF diaphragm resists wear, abrasion and high temperatures. This durability extends service intervals and cuts operating costs.
OEM Quality & Strict QC
Produced and inspected under Huilian’s rigorous quality control process, each diaphragm meets strict dimensional and performance standards for consistent, reliable results.
Benefits
- Lower downtime thanks to extended seal life
- Improved hydraulic efficiency and reduced leakage
- Cost-effective replacement that matches OEM performance
- Fast, straightforward installation for maintenance teams
About Huilian
Founded in 2005, Huilian Machine is a professional OEM supplier of excavator parts from Guangzhou, China. We manufacture hydraulic breaker hammers, chisels, seals and seal kits, diaphragms, pistons, wear bushes, retainer bars, bolts, valves and liners. Our experienced R&D, production and after-sales teams ensure top quality. Exported to over 90 countries, Huilian is committed to becoming a global leader and is seeking distributor partners worldwide. Visit https://www.huilianmachine.com/ for more information.
Ordering & Support
For reliable SB121TRF diaphragms, contact Huilian sales for competitive pricing, bulk discounts and fast shipping. Our technical support team can confirm fitment and help streamline replacement to get your breaker back in service quickly.
Ready to buy?
Reach out to Huilian today to secure genuine SB121TRF diaphragms and keep your excavator breakers running at peak performance.
Product Images
Qualification Certificate
Hydraulic-Breaker-CE-Certificate
ORI Certificate
Certificate of Honor
Frequently Asked Questions
What types of excavator parts do you offer?
We provide a wide range of high-quality excavator parts, including hydraulic breakers, chisels, seal kits, diaphragms, pistons, wear bushes, retainer bars, through bolts, side bolts, valves, and liners.
Are your parts compatible with all excavator brands?
Yes, our parts are designed to be compatible with major brands like Komatsu, Caterpillar, Hitachi, Hyundai, Doosan, JCB, Kobelco, Sany, and many more.
How can I ensure I’m selecting the right part for my equipment?
Our expert team can assist you in finding the right part based on your machine model, specifications, and requirements. Contact us for personalized support.
What is your shipping and delivery time?
We offer fast and reliable global shipping. Delivery times vary depending on location and order size, but we strive to process and ship orders as quickly as possible.
If you have any questions or concern, please contact us.

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