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LZ00339 Hydraulic Cylinder Seal Kit for Sumitomo SH300
$55.87set
Made of durable materials, FASeals seals offer reliable performance, protecting your machinery from oil leaks. They’re easy to install and resistant to wear. Choosing this seal ensures your machinery always operates at peak performance.
Description
LZ00339 Hydraulic Cylinder Seal Kit for Case
This seal kit is engineered for hydraulic cylinders of Sumitomo(Case) excavators (boom, arm or bucket cylinders). Compatible with models such as SH120, SH200-2, SH300, SH350 etc.
The kit is used in the hydraulic cylinder assembly of the excavator to maintain hydraulic fluid integrity, prevent leakage and ensure smooth operation under high pressure.
Material Composition:
| Component | Material | Properties |
|---|---|---|
| Rod Seal | PU or HNBR | High-pressure, anti-leakage |
| Piston Seal | PTFE + NBR | Low friction, wear resistant |
| Wiper Seal | PU / Metal PU | Dust & dirt protection |
| Back-Up Ring | POM / PTFE | Prevents extrusion |
| O-Rings | NBR / Viton | Oil & temperature resistance |
Installation Notes / Recommendations:
-
Before installation, thoroughly clean cylinder components (rod, tube interior, head/gland) to remove debris, old seal remnants and scoring.
-
Inspect rod surface for nicks, scratches or corrosion and repair or replace if necessary — damaged rods will prematurely wear new seals.
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Use correct hydraulic fluid to lubricate seals during installation to avoid damage.
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Install in correct sequence (e.g., wear ring, backup ring, piston seal, O-ring) and ensure correct orientation of each component.
-
After installation, bleed the hydraulic system, perform leak checks, and verify correct cylinder operation under load.
Tips:
-
Match the kit specifically to your model and cylinder type (boom, arm or bucket) to avoid fitment issues.
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Inspect your cylinder rod & barrel for damage — replacing seals alone won’t fix underlying mechanical wear.
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Consider keeping a spare kit and extra seals if your machine sees heavy use — downtime savings can be substantial.
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Use proper installation tools and practice good hygiene (clean working area, remove contaminants) to avoid seal damage.
-
Record the installation date & seal kit used in your maintenance log so you can track performance and replacement intervals.
FAQ:
- What is the normal lead time for product orders?
A: Generally it is 1-2 days if the goods are in stock. or it is 5-10 days if the goods are not in stock, it is according to quantity. - What is your standard packing?
A: All the goods will be packed by carton box and loaded with pallets. Special packing method can be accepted when needed. - What materials are available to produce from your side?
A: NBR, EPDM, SILICONE, FPM(FKM), NEOPRENE(CR), NR, IIR, SBR, ACM, AEM, Fluorosilicone(FVMQ), FFKM, Liquid Silicone, Sponge, etc. - Why choose FASeals?
A：Farin parts Co., Ltd. is a professional manufacturer of seals with over 15 years of industry experience.
When you purchase our products, we will provide corresponding technical services, such as methods to prevent oil seal leakage, how to choose the material of the seal, etc.
Additional information
| Weight | 1.5 kg |
|---|---|
| Dimensions | 15 × 15 × 10 cm |
| Brand |
FASeals |
| Material |
PU、TPFE、FKM、NBR |
| Compatible Brand |
Hitachi ,Komatsu ,Caterpillar ,Kobelco ,Volvo ,Kubota ,Hyundai ,Sumitomo ,Case ,Sany ,Liugong ,XCMG |
| Condition |
Brand New |
| Vendor Warranty |
3 Months Parts Warranty |
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