Grundfos 99358478 Flange Gasket
The Grundfos 99358478 Flange Gasket is a precision-engineered EPDM rubber seal designed specifically for Grundfos UP and UPS series circulator pumps. Engineered for a leak-proof interface between the pump housing and GF 15/26 flange connections, these gaskets maintain mechanical integrity under high-pressure hydronic conditions. As a standard 2-pack replacement set, they are essential for routine maintenance or new installations of cast iron and bronze pump housings. The high-grade elastomeric construction provides excellent thermal resistance and compression set characteristics, ensuring a long-term fluid seal in closed-loop heating and chilled water systems. These gaskets are compatible with standard 2-bolt flange kits found on UP15-42F, UPS26-99FC, and UP26-96F models. Utilizing factory-spec pump flange gaskets during service prevents cavitation-inducing air ingress and protects the system from fluid loss at the volute connection points.
Key Benefits for Technicians- Precise Volute Fit: Molded to exact specifications for Grundfos UP15 and UP26 series, ensuring zero-clearance sealing without over-tightening.
- Durable EPDM Material: Resists thermal degradation in high-temp hydronic applications and maintains elasticity across a wide temperature range.
- Dual-Pack Value: Includes two gaskets per package, providing a complete service kit for both the suction and discharge sides of a single circulator.
- Cross-Model Compatibility: Verified for use with industry-standard HVAC circulators utilizing GF 15/26 mounting patterns.
Are these gaskets compatible with non-Grundfos pumps?
While designed for Grundfos GF 15/26 series, they typically fit standard 2-bolt circulator flanges used by other manufacturers; however, verifying the outer diameter and bolt hole alignment against the specific volute is recommended.
Should I use pipe dope or RTV on these gaskets?
No, these EPDM gaskets are designed for dry installation. Adding sealants can cause the rubber to slip during torque application, compromising the leak-free seal.
Will these work in potable water systems?
Yes, when used with stainless steel or bronze Grundfos models, these gaskets are suitable for domestic hot water recirculation systems.
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.
Grundfos 99358478 Flange Gasket
The Grundfos 99358478 Flange Gasket is a precision-engineered EPDM rubber seal designed specifically for Grundfos UP and UPS series circulator pumps. Engineered for a leak-proof interface between the pump housing and GF 15/26 flange connections, these gaskets maintain mechanical integrity under high-pressure hydronic conditions. As a standard 2-pack replacement set, they are essential for routine maintenance or new installations of cast iron and bronze pump housings. The high-grade elastomeric construction provides excellent thermal resistance and compression set characteristics, ensuring a long-term fluid seal in closed-loop heating and chilled water systems. These gaskets are compatible with standard 2-bolt flange kits found on UP15-42F, UPS26-99FC, and UP26-96F models. Utilizing factory-spec pump flange gaskets during service prevents cavitation-inducing air ingress and protects the system from fluid loss at the volute connection points.
Key Benefits for Technicians- Precise Volute Fit: Molded to exact specifications for Grundfos UP15 and UP26 series, ensuring zero-clearance sealing without over-tightening.
- Durable EPDM Material: Resists thermal degradation in high-temp hydronic applications and maintains elasticity across a wide temperature range.
- Dual-Pack Value: Includes two gaskets per package, providing a complete service kit for both the suction and discharge sides of a single circulator.
- Cross-Model Compatibility: Verified for use with industry-standard HVAC circulators utilizing GF 15/26 mounting patterns.
Are these gaskets compatible with non-Grundfos pumps?
While designed for Grundfos GF 15/26 series, they typically fit standard 2-bolt circulator flanges used by other manufacturers; however, verifying the outer diameter and bolt hole alignment against the specific volute is recommended.
Should I use pipe dope or RTV on these gaskets?
No, these EPDM gaskets are designed for dry installation. Adding sealants can cause the rubber to slip during torque application, compromising the leak-free seal.
Will these work in potable water systems?
Yes, when used with stainless steel or bronze Grundfos models, these gaskets are suitable for domestic hot water recirculation systems.
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.
Product Information
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Description
The Grundfos 99358478 Flange Gasket is a precision-engineered EPDM rubber seal designed specifically for Grundfos UP and UPS series circulator pumps. Engineered for a leak-proof interface between the pump housing and GF 15/26 flange connections, these gaskets maintain mechanical integrity under high-pressure hydronic conditions. As a standard 2-pack replacement set, they are essential for routine maintenance or new installations of cast iron and bronze pump housings. The high-grade elastomeric construction provides excellent thermal resistance and compression set characteristics, ensuring a long-term fluid seal in closed-loop heating and chilled water systems. These gaskets are compatible with standard 2-bolt flange kits found on UP15-42F, UPS26-99FC, and UP26-96F models. Utilizing factory-spec pump flange gaskets during service prevents cavitation-inducing air ingress and protects the system from fluid loss at the volute connection points.
Key Benefits for Technicians- Precise Volute Fit: Molded to exact specifications for Grundfos UP15 and UP26 series, ensuring zero-clearance sealing without over-tightening.
- Durable EPDM Material: Resists thermal degradation in high-temp hydronic applications and maintains elasticity across a wide temperature range.
- Dual-Pack Value: Includes two gaskets per package, providing a complete service kit for both the suction and discharge sides of a single circulator.
- Cross-Model Compatibility: Verified for use with industry-standard HVAC circulators utilizing GF 15/26 mounting patterns.
Are these gaskets compatible with non-Grundfos pumps?
While designed for Grundfos GF 15/26 series, they typically fit standard 2-bolt circulator flanges used by other manufacturers; however, verifying the outer diameter and bolt hole alignment against the specific volute is recommended.
Should I use pipe dope or RTV on these gaskets?
No, these EPDM gaskets are designed for dry installation. Adding sealants can cause the rubber to slip during torque application, compromising the leak-free seal.
Will these work in potable water systems?
Yes, when used with stainless steel or bronze Grundfos models, these gaskets are suitable for domestic hot water recirculation systems.
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.
