721-98-00290 Boom Cylinder Seal Kit for Komatsu PC240LC-11 PC240NLC-11 Excavators

721-98-00290 Boom Cylinder Seal Kit for Komatsu Equipment

Address hydraulic fluid leaks and restore proper boom cylinder pressure with the WINSCHEN 721-98-00290 Seal Kit. Engineered to meet the rigorous operational standards of Komatsu PC240-11 series excavators, this aftermarket service kit provides the essential elastomeric components required to fully rebuild and maintain your boom cylinder assemblies.

Key Features

Direct Replacement: Manufactured to precise OEM dimensional tolerances, ensuring a seamless fit and straightforward installation as a direct replacement for Komatsu part number 721-98-00290.
Industrial Durability: Constructed from fluid-resistant polyurethane and high-grade rubber compounds designed to withstand continuous internal friction, high pressure spikes, and environmental contaminants typical in earthmoving applications.
Cost-Effective Maintenance: A highly functional aftermarket alternative that meets original equipment specifications, providing a reliable solution for hydraulic boom cylinder rebuilding and minimizing routine equipment downtime.

Compatible Equipment Models

Excavators: PC240LC-11, PC240NLC-11, PC240LC-11E0, PC240NLC-11E0 Komatsu

Seal Kit Related Parts

Part No	Qty	Parts name
07000-B3030	1	O-Ring
07000-B3035	2	O-Ring
07000-B5085	1	O-Ring
07000-B5125	1	O-Ring
07145-00080	4	Seal, Dust
707-35-30850	2	Ring, Back-up
707-35-31260	3	Ring, Back-up
707-39-13530	2	Ring, Wear
707-44-13250	1	Ring, Piston
707-51-95650	1	Ring, Buffer
707-51-95860	1	Packing, Rod
707-56-95740	1	Seal, Dust

Specifications

Part Number	721-98-00290 (7219800290)
Part Type	Boom Cylinder Seal Kit / Service Kit
Application	Hydraulic Cylinder Rebuild
Brand	WINSCHEN
Country of Origin	China
SKU	KOM-721-98-00290
MOQ	1 SET
Delivery Time	1-3 business days

To ensure proper fitment, please verify your machine 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 Komatsu Seal Kit Categories

Browse more Komatsu 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.