Description
Keep your fluid systems running leak-free with the Armstrong Fluid Technology 8426401-006 Pump Casing Gasket — a direct replacement engineered specifically for Armstrong pump Series 4030, 4280, 4380, and 4300. Crafted from durable nitrile material, this gasket delivers consistent sealing performance under demanding operating conditions, helping you avoid costly downtime and system failures.
Designed for pumps with a maximum impeller diameter of 11-1/2 inches, every dimension is precision-matched to ensure a drop-in fit with no guesswork. The straightforward installation process minimizes labor time, getting your system back online faster.
Product Highlights:
- Precision fit for Armstrong Series 4030, 4280, 4380, and 4300 pumps
- Compatible with pumps featuring an 11-1/2″ maximum impeller diameter
- Nitrile construction for superior sealing reliability and chemical resistance
- Exact OEM dimensions eliminate fitment issues and reduce installation time
Technical Specifications:
- Material: Nitrile
- Outer Diameter: 12-15/16″
- Inner Diameter: 11-9/16″
- Thickness: 1/16″
- SKU: 8426401-006







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