Armstrong Fluid Technology AS1270-259 O-Ring

Ensure leak-free performance in your HVAC or fluid management system with the Armstrong Fluid Technology AS1270-259 O-Ring. This genuine EPDM rubber suction guide seal is specifically engineered to fit the cover assembly of Armstrong SG-55 and SG-65 suction guides, as well as SGG and SGHH models. Measuring exactly 6.234" ID x 0.139" CS, this precision-molded component provides a high-integrity seal for 5-inch pump side connection suction guides. The high-performance EPDM elastomer construction offers exceptional resistance to water, steam, and common hydronic chemicals, maintaining its shape and elasticity in temperatures ranging from -40°F to 248°F. By selecting this OEM replacement O-ring, you prevent pressure loss and downtime while extending the service life of your suction diffusers. Trust in Armstrong Fluid Technology for reliable, commercial-grade sealing solutions that meet exact industrial specifications.

• Optimized Material: Durable EPDM construction resists ozone, UV exposure, and weathering for long-term reliability.
• Precision Dimensions: Featuring a 6.234" internal diameter and 0.139" cross-section for a perfect 5-inch suction guide fit.
• Broad Compatibility: Direct replacement for part number AS1270-259, supporting SG-55, SG-65, and SGG series diffusers.
• Temperature Resilience: Engineered to remain flexible and effective across a wide thermal operating range.

• Is this O-ring compatible with both the SG-55 and SG-65 suction guides? Yes, it is the standard replacement cover seal for both 5-inch suction guide models.
• What fluid types can this EPDM O-ring handle? It is ideal for water and glycol-based hydronic systems but is not recommended for use with petroleum-based oils.
• How often should I replace the suction guide O-ring? It should be replaced whenever the cover is removed for maintenance or if visual cracking or compression set is observed.

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.