Short answer: Before buying a hydraulic seal kit, confirm the complete part number, machine model, serial range, hydraulic component, cylinder position and any available rod, bore and groove dimensions. Never select a kit from a similar photo or machine family alone.
Information to Collect Before Requesting a Quote
| Check | What to record | Why it matters |
|---|---|---|
| Part number | Every digit, letter, hyphen, slash and suffix | Similar references may identify different kits |
| Machine | Brand, full model and serial number | Cylinders can change across production ranges |
| Position | Boom, arm/stick, bucket, blade, steering, stabilizer, tilt or other function | Different positions normally use different seals |
| Component | Cylinder, pump, motor, center joint, track adjuster or breaker | “Seal kit” alone does not identify the assembly |
| Dimensions | Rod, bore, groove and seal measurements with units | Supports fitment verification |
| Evidence | Nameplate, old package and seal photos | Helps resolve incomplete references |
Ten-Point Hydraulic Seal Kit Purchasing Checklist
- Confirm the complete reference. Do not remove prefixes or suffixes.
- Identify OEM reference versus seller SKU. A supplier's stock code may not be the machine manufacturer's part number.
- Record the exact machine model. Include suffixes such as LC, US, -7 or series designations.
- Check the serial range. The same model may use more than one cylinder revision.
- Name the repair position. State exactly where the component is installed.
- Confirm measurement units. Do not mix millimetres and inches.
- Compare kit contents. Check expected rod seals, piston seals, wipers, O-rings, backup rings and wear rings.
- Review material requirements. Provide unusual fluid, pressure or temperature conditions.
- Check commercial terms. Confirm quantity, lead time, shipping country, return conditions and warranty scope.
- Verify before installation. Compare received components with the listing and original parts before opening all packaging.
Common Buying Errors
- Ordering only from an excavator model name
- Confusing boom, arm and bucket cylinders
- Assuming visually similar kits are interchangeable
- Treating the seller SKU as the OEM part number
- Using rod and bore dimensions without checking the seal profile
- Ignoring model suffixes or serial-number changes
What to Send When the Part Number Is Missing
Send the full machine information, cylinder position, photos of the cylinder and nameplate, old packaging, a complete seal layout and accurate measurements. See how to measure a seal kit. More complete evidence produces a more reliable recommendation.
Frequently Asked Questions
Can I order using only the machine model?
Sometimes it narrows the search, but it is not always enough. Confirm the component position, part number, serial range or dimensions.
Does an OEM reference mean the replacement is OEM-manufactured?
No. A reference can be used to identify compatibility. Unless expressly stated, Fujis Seal products are aftermarket replacement parts and are not represented as being manufactured or endorsed by the equipment brand.
Should I open the complete kit before checking it?
First compare the label, visible contents and application information. Follow the published return conditions before opening or installing components.
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