456-0200 Boom Cylinder Seal Kit 100mm Rod 140mm Bore for Caterpillar Excavator CAT 330 GC 330F 330D2

456-0200 Boom Cylinder Seal Kit

456-0200 is a complete hydraulic cylinder seal kit used for boom cylinder repair on selected Caterpillar excavators. The kit is designed to replace the primary sealing and backup components required during boom cylinder overhaul rather than replacing the complete cylinder assembly.

Caterpillar identifies 456-0200 as an application-specific boom cylinder seal kit. Because different cylinder groups can be used across excavator models and production ranges, the original kit number and cylinder configuration should be confirmed before ordering.

Caterpillar Excavator Fitment

456-0200 is listed for a broad range of Caterpillar excavators. Confirmed excavator families include 311D LRR; 320B, 320C, 320D, 320D2, 320E, 320F and 320 GC configurations; 321B, 321C and 321D; 322B and 322C; 323, 323D, 323D2, 323E and 323F; 324D and 324E; 325, 325B, 325C, 325D and 325F; 326, 326D, 326D2, 326F and 326 GC; 328D; 329D, 329D2, 329E and 329F; 330, 330D2, 330F and 330 GC; plus selected 333 and 335 series machines.

The product shown on this page is labeled for the E330GC boom cylinder application. Fitment should still be verified using the original 456-0200 number, excavator model, machine serial number or boom cylinder information when available.

What's Included in the 456-0200 Seal Kit

The Caterpillar reference kit contains ten sealing component references covering O-rings, backup rings, plastic rings, a buffer seal, U-cup seal and lip seal. These are kit components and should not be treated as cross-reference numbers for 456-0200.

The table above describes the Caterpillar reference kit configuration. Packaging, seal manufacturer and supplied component appearance may vary by supply batch, so confirm any specific brand or packaging requirement before ordering.

Boom Cylinder Inspection Before Rebuilding

Before installing a new seal kit, inspect the piston rod for scoring, corrosion, chrome damage and abnormal wear. The cylinder tube, piston, gland and seal grooves should also be checked for damage that could cause new seals to leak or wear prematurely.

Clean all cylinder components carefully before assembly and verify the installation direction of each sealing element and backup ring. Hydraulic contamination, damaged sliding surfaces or excessive component clearance should be corrected before the rebuilt cylinder is returned to service.

Topvelsun Cylinder Seal Kit Supply

Topvelsun supplies excavator hydraulic cylinder seal kits through qualified supply channels with 1-piece MOQ and a 6-month warranty. For accurate fitment confirmation, send the OEM part number, excavator model, machine serial number, cylinder information or clear photos of the original kit before ordering.

FAQ

What is Caterpillar part number 456-0200?

456-0200 is a complete hydraulic cylinder seal kit used for boom cylinder repair on selected Caterpillar excavators.

What parts are included in the 456-0200 seal kit?

The reference kit contains ten sealing component references, including O-rings, backup rings, plastic rings, a buffer seal, U-cup seal and lip seal for boom cylinder rebuilding.

Can the individual seals inside 456-0200 be ordered separately?

Yes, if you need any individual component from the kit, please contact us.