Genuine Koshin Gasket — Part No. 004003802 (For Koshin FA-100 & GL Series Pumps)
€10.00
Excluding VAT
The Genuine Koshin Gasket (Part No. 004003802) is an OEM internal sealing gasket engineered specifically for Koshin FA-100 high-flow electric oil transfer pumps and compatible Koshin GL Series gear pumps.
Molded from high-grade, oil- and fuel-resistant elastomer, this precision gasket fits between the pump body and casing covers. It creates an airtight, fluid-tight seal essential for maintaining hydraulic priming pressure, preventing internal pressure drops, and stopping oil or kerosene leakage during heavy-duty fuel transfer operations.
Key Specifications
| Feature | Details |
|---|---|
| Brand | Koshin Ltd. (Japan) |
| Part Number | 004003802 |
| Part Name | Gasket / Casing Seal |
| Material Grade | Oil- & Fuel-Resistant High-Grade Elastomer |
| Compatible Models | Koshin FA-100 & Koshin GL Gear Pump Series |
| Fluid Compatibility | Kerosene, Light Oils, Heavy Fuel Oils, Diesel |
| Primary Function | Restores fluid-tight pressure seal across pump chamber |
| Standard Qty per Pump | 1 pc required |
Model Compatibility
1. KOSHIN Electric Oil Transfer Pumps
Koshin FA-100 (1" High-Volume Electric Kerosene & Oil Transfer Pump)
2. KOSHIN Industrial Gear Pumps
Koshin GL Series (GL-13, GL-20, GL-25, GL-32, GL-40, GL-50 High-Pressure Gear Pumps)
Design & Key Features
Oil & Fuel Resistant Material: Specially formulated to withstand continuous contact with petroleum products, kerosene, diesel, and viscous oils without swelling, shrinking, or cracking.
Preserves High Priming Compression: Maintains positive internal displacement required by GL gear and FA-100 pumps for fast self-priming and smooth flow rates.
Exact OEM Contour: Precision-cut bolt patterns match original factory pump casing grooves for easy, pinch-free installation during pump rebuilds.
Package Includes & Tech Notes
1x Genuine Koshin Gasket (004003802)
Maintenance Tip: Clean all mating metal surfaces thoroughly of old gasket material, varnish, and grit before installing the new gasket. Ensure casing bolts are torqued down evenly in a cross pattern to ensure a uniform seal.

































