Armstrong Fluid Technology 89975001-83702K Seal

The Armstrong Fluid Technology 89975001-83702K Seal is a precision-engineered silicon carbide mechanical seal designed for high-performance fluid handling. This shaft seal replacement is the direct successor to the 89975001-837, offering enhanced durability for abrasive environments. Built to handle abrasive glycol and high-temperature water applications, the 89975001-83702K features silicon carbide faces that provide exceptional hardness and wear resistance. This kit is a vital HVAC pump repair part, commonly utilized in Armstrong Series 4030, 4280, 4380, and 4392 pumps. It includes a 1.625-inch seal, an 8-inch gasket, and essential hardware like screws and washers to ensure a complete, leak-free installation. By maintaining a tight seal between the rotating shaft and stationary housing, this component optimizes system efficiency and prevents costly downtime in industrial and commercial centrifugal pump systems.

Key Benefits:

• Extreme Durability: The silicon carbide faces (SC/SC) resist wear from grit and abrasive solids found in HVAC systems.
• Chemical Resistance: Equipped with EPR (Ethylene Propylene Rubber) elastomers, making it ideal for glycols and treated water.
• High Temperature Rating: Engineered to withstand operating temperatures up to 250°F (121°C).
• Complete Rebuild Kit: Includes the mechanical seal, 8-inch gasket, and installation lubricants for a comprehensive service.
• Direct Compatibility: Seamlessly replaces the older 89975001-837 model without requiring modifications to the pump frame.

Common Questions Regarding the 89975001-83702K:

What pumps is this seal kit compatible with?
This kit is specifically designed for Armstrong Vertical In-Line and Horizontal In-Line pumps, including Series 4030, 4280, 4380, 4382, and 4392 pumps using a 1-5/8" (1.625) seal size.

Can this be used for potable water applications?
While the 89975001-83702K is excellent for abrasive glycol and high-temp water, always verify local plumbing codes as silicon carbide and EPR are typically prioritized for closed-loop HVAC systems rather than potable drinking water.

How do I know if I need a Silicon Carbide seal instead of Carbon/Ceramic?
If your system experiences frequent seal failures due to sediment, rust, or abrasive glycol, upgrading to this silicon carbide model provides the necessary hardness to prevent face scoring.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

This item is not eligible for free shipping.