Caterpillar dozer seal kits
Browse aftermarket replacement hydraulic seal kits for Caterpillar dozers. Fujis Seal organizes this collection to help repair shops, equipment owners and parts buyers identify kits by Caterpillar/CAT machine model, OEM/reference part number, cylinder position and available rod and bore dimensions. Applications may include blade lift, blade tilt, angle, ripper and other dozer hydraulic cylinders.
Caterpillar Dozer Hydraulic Cylinder Seal Kits
Dozer hydraulic cylinders operate under heavy loads, contamination and repeated shock, so worn seals can lead to oil leakage, pressure loss, cylinder drift and reduced blade or ripper control. Seal kits are application-specific and should be matched to the exact cylinder rather than selected by machine model alone.
Depending on the application, a kit may include rod seals, piston seals, wiper seals, O-rings, backup rings and wear or guide rings. Exact kit contents and seal materials vary by cylinder design and should be confirmed on the individual product page.
How to Identify the Correct Caterpillar Dozer Seal Kit
Use as many identifiers as possible before ordering:
- Machine model: confirm the complete Caterpillar/CAT dozer model.
- Serial number: useful when the same model uses different cylinder groups.
- Cylinder position: blade lift, tilt, angle, ripper or other hydraulic function.
- OEM/reference part number: the preferred starting point when available.
- Rod and bore dimensions: use these to support fitment verification.
- Photos and markings: cylinder tags, old seal markings or package labels can help identify an unlisted application.
Dimensions alone should not be treated as a complete fitment guarantee because cylinders with similar rod and bore sizes can use different seal profiles or groove dimensions.
Common Caterpillar Dozer Seal Kit Applications
Blade lift cylinders raise and lower the blade. Tilt and angle cylinders control blade position and cutting angle. Ripper cylinders operate rear-mounted ripping equipment. Selecting the correct hydraulic function is important because each cylinder can use a different sealing arrangement even on the same machine.
Part Number and Dimension Cross-Reference
When an OEM/reference number is available, use it as the primary lookup method. Rod and bore dimensions can then be used as a secondary check. If the part number is missing, accurate measurements plus photos of the cylinder and old seals can help narrow the application. Read our hydraulic cylinder seal kit measurement guide for measurement guidance.
Fitment Support from Fujis Seal
If you cannot locate the correct kit, contact Fujis Seal with the dozer model, serial number, hydraulic cylinder position, available part number, photos and dimensions. Our support team can compare the information with application and cross-reference data before you order.
Caterpillar Dozer Seal Kit FAQs
Can one dozer model use more than one seal kit?
Yes. Different cylinder positions and serial-number ranges can use different seal kits on the same machine model.
Can I choose a dozer seal kit by rod and bore size only?
Rod and bore dimensions are useful confirmation data, but they should be combined with the machine model, cylinder position and part number whenever possible.
What do I need if my Caterpillar part number is unreadable?
Provide the complete machine model, serial number, cylinder position, clear photos and accurate measurements. Old seal markings can also help with identification.
Are these genuine Caterpillar parts?
Unless an individual product listing expressly states otherwise, products in this collection are aftermarket replacement seal kits supplied by Fujis Seal. Caterpillar and CAT names and reference numbers are used for compatibility and product identification only.
Caterpillar and CAT are trademarks of their respective owner. Their use on this site does not imply endorsement or affiliation.
