Armstrong Fluid Technology AS1270-250 O-Ring

The Armstrong Fluid Technology AS1270-250 O-Ring is a high-performance EPDM rubber seal engineered specifically for 4-inch pump side connection suction guides. Designed for precision, this EPDM cover O-ring features a 4.984-inch ID and a 0.139-inch cross section, ensuring a leak-proof fit for commercial hydronic systems. This industrial pump gasket is optimized for HVAC pump maintenance, offering superior resistance to heat, water, and environmental aging. By maintaining a reliable suction guide seal, the AS1270-250 protects system efficiency and prevents pressure loss in critical circulation loops. Whether performing routine pump repair or a complete system overhaul, utilizing genuine Armstrong replacement parts ensures compatibility with your centrifugal pump assembly. This durable elastomeric seal serves as a vital component in Armstrong suction guides, providing the resilience needed for long-term service in demanding mechanical room environments.

• Precision Fit: Specifically sized at 4.984" ID x 0.139" CS for 4-inch pump side suction guide covers.
• EPDM Construction: Provides excellent resistance to hot water, steam, and polar solvents.
• System Reliability: Prevents air ingress and fluid leaks, maintaining hydraulic integrity.
• Direct Replacement: Matches OEM specifications for seamless integration into Armstrong Fluid Technology systems.

What is the temperature range of the EPDM material used in this O-ring?
EPDM is typically rated for temperatures ranging from -65°F to 300°F, making it ideal for most heating and cooling applications.

How do I know if the AS1270-250 is the correct seal for my suction guide?
This seal is designed for 4" pump side connections. Checking the ID and cross-section dimensions against your existing seal or technical manual is recommended.

Can this O-ring be used with petroleum-based lubricants?
No, EPDM seals should not be used with petroleum oils or greases; use a silicone-based lubricant instead.

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.