Rectangular Ring Seal 3915772 For 4BT 3.9 6BT5.9 Engine

Keywords: 3915772 rectangular ring seal, 4BT3.9 engine sealing ring, 6BT5.9 rectangular o‑ring, diesel engine rectangular ring seal, engine overhaul seal spare parts, construction machinery engine aftermarket seal

Product Overview

Rectangular Ring Seal Part No.3915772 is special rectangular cross‑section sealing ring for diesel engine, compatible with 4BT 3.9 and 6BT5.9 engines widely fitted on excavators and construction machinery. It is installed on engine cooling system and lubrication assembly positions, to seal joint surface and prevent coolant leakage and engine oil leakage. This replacement rectangular ring seal fixes common problems such as oil seepage, coolant dripping, pressure drop caused by seal aging, hardening, crack and permanent deformation. Produced strictly follow OEM dimension standard for direct replacement during engine overhaul service.

Detailed Specifications

Key Features & Advantages

• Exact OEM size and rectangular cross‑section geometry, perfect fit installation groove of 4BT3.9 /6BT5.9 engine.
• Premium rubber compound material, excellent oil‑resistance, coolant‑resistance and high‑temperature performance.
• Good compression recovery capability, keep stable sealing performance under long‑term temperature cycling working condition.
• Anti‑aging, anti‑crack property, extend service life under complex engine operating environment.
• Every seal ring is checked for dimension and appearance before factory shipment.
• Ideal small sealing spare part for full engine overhaul and on‑site leakage troubleshooting maintenance.

Application Scope

Fit Equipment: Excavators and construction machinery equipped with 4BT 3.9, 6BT5.9 diesel engine ‑ Widely used for machinery repair workshops, equipment fleet maintenance and engine overhaul projects.

Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

Packaging & Shipping

Sealed inner plastic bag packaging, avoid seal contamination and deformation during transportation ‑ Export‑grade outer carton for safe sea and land transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.