277-3395 Boom Cylinder Seal Kit for Caterpillar 304C CR 305E Excavator

277-3395 Boom Cylinder Seal Kit for Caterpillar Equipment

Eliminate hydraulic fluid leaks and restore the precise digging and lifting performance of your compact excavator with the WINSCHEN premium 277-3395 Hydraulic Cylinder Seal Kit. Engineered to withstand the demanding operational pressures and rugged environments of tight-space construction and utility earthmoving, this high-quality aftermarket repair kit ensures your Caterpillar equipment operates safely and efficiently with zero pressure loss.

Key Features

Manufactured to strict OEM dimensions, ensuring a precise and seamless fit for the hydraulic cylinders used in highly versatile Caterpillar 304C CR, 305.5E, 305D CR, and 305E mini excavators.
Constructed from advanced elastomeric, polyurethane, and heavy-duty wear-resistant materials to provide exceptional resistance to high hydraulic pressure, continuous rod friction, and extreme thermal variations.
Effectively eliminates internal fluid bypass and external leakage, maintaining highly responsive hydraulic control and consistent mechanical force during tough trenching or lifting operations.
This comprehensive seal kit includes all essential precision components required for a complete and reliable cylinder overhaul, directly replacing part number 277-3395 and its associated sub-components.
A cost-effective, highly reliable aftermarket alternative that meets or exceeds original equipment standards, minimizing your machine’s routine maintenance downtime and maximizing productivity.

Compatible Equipment Models

Compact Excavators: 304C CR, 305.5E, 305D CR, 305E Caterpillar

Seal Kit Related Parts

Part No	Qty	Parts name
277-3381	1	Seal
095-1713	1	Seal-O-Ring
277-3383	1	Seal
277-3384	1	Ring
277-4933	1	Ring
095-1712	2	Seal-O-Ring
277-3386	2	Ring
277-3389	1	Ring
277-3390	1	Ring
277-3392	4	Seal
263-9891	1	Seal-O-Ring

Specifications

Part Number	277-3395 (2773395)
Part Type	Boom Cylinder Seal Kit / Service Kit
Application	Hydraulic Cylinder Rebuild
Brand	WINSCHEN
Country of Origin	China
SKU	CTC-277-3395
MOQ	1 SET
Delivery Time	1-3 business days

To ensure proper fitment, please verify your machine’s exact model and original hydraulic cylinder configuration with our support team prior to purchasing. We offer fast global shipping to keep your heavy machinery operating efficiently.

Related Caterpillar Seal Kit Categories

Browse more Caterpillar replacement parts or compare other hydraulic cylinder seal kits. For fitment confirmation, send the OEM part number, machine model through our inquiry form or WhatsApp.