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215-9985 Boom Cylinder Seal Kit for C 325C CRB00930 Excavator
High-pressure repair kit designed for C 325C excavator boom cylinders with serial number CRB00930.
Compatible Models
Model Series
Specific Models
325C Series
325C, 325C L, 325C LN (Serial number CRB00930 applies)
320C Series
320C, 320C L, 320C LN, 320C LRR, 320C S
322C Series
322C, 322C L, 322C LN
Other Models
Some 330CL and 325D series models, Tracked forestry machinery, Wheeled excavators
Product Overview
The 215-9985 (R) is a boom cylinder seal repair kit featuring a multi-stage seal combination structure with main sealing system and auxiliary seals.
Working Principle
When hydraulic oil enters one chamber of the cylinder, it pushes the piston and drives the piston rod while oil returns from the other chamber. The 215-9985 kit ensures hydraulic oil doesn't leak from the high-pressure chamber and prevents air from entering the low-pressure chamber.
Key Advantages
Specifically designed for C 325C boom cylinder appliCions
100mm piston rod diameter matches original factory specifiCions
Multi-stage sealing structure withstands high-pressure impact of 325C hydraulic system
Dustproof design adapts to harsh construction machinery working environments
Installation and Maintenance Guidelines
Pre-Installation: Thoroughly clean cylinder components and inspect piston rod for scratches or deformation
Installation Direction: Ensure sealing ring and dust seal are installed correctly (dust seal opening facing outwards)
LubriCion: Use clean hydraulic oil for lubriCion - never use grease
Assembly: Use specialized tools to press evenly and avoid twisting or damaging sealing rings
Testing: After installation, run machine under no-load conditions for 5-10 minutes to check for leaks
The 215-9985 (R) is a core maintenance component for C 325C excavator boom cylinders, ensuring efficient hydraulic system operation through sophistiCed multi-stage sealing technology.
This design balances durability and sealing performance, enabling reliable operation under various working conditions while extending cylinder life and reducing maintenance costs.
Specializing in high-quality seals for construction machinery, including:
Main oil seals, buffers, dust seals, skeleton oil seals
O-rings, Gleditsia sinensis rings, Step seals
Wear rings, guide rings, and various excavator seal repair kits
Hydraulic breaker repair kits and other construction machinery seals
We provide standard parts and support custom customization services.
Brand Partnerships
Authorized distributor for premium seal brands: WYS (Korea), SKF (USA), TTO (Taiwan), PET, and YCC.
Since establishment, we've provided wholesale services to clients across Southeast Asia, Middle East, and South America, establishing strong partnerships.
Our development relies on client support. We're committed to working collaboratively with partners worldwide, delivering exceptional products and services to achieve mutual success.
Frequently Asked Questions
Q: What kind of company are you?
A: Guangzhou Yanqkai Machinery is a manufacturer of high-quality seals for excavators and holds the exclusive distributorship in China for WYS products from South Korea.
Q: Which brands do you operate?
A: We carry brands such as WYS, SKF, TTO, PET, and YCC. We offer standard parts and also support personalized customization.
Q: How can I get the sample?
A: Send the part number via email/WhatsApp, and the sales manager will reply promptly.
Guangzhou Yangkai Machinery Parts Co., Ltd. was founded in 2008, our company has 18 years experience which is a professional, diversified construction machinery parts supply enterprises, Our products suitable for: komatsu, C, Hitachi, sumitomo, kato, daewoo, hyundai,kobelco,,Sany and other brands of... Guangzhou Yangkai Machinery Parts Co., Ltd. was founded in 2008, our company has 18 years experience which is a professional, diversified construction machinery parts supply enterprises, Our products suitable for: komatsu, C, Hitachi, sumitomo, kato, daewoo, hyundai,kobelco,,Sany and other brands of...
