
Grundfos 99886916 EPDM Gasket
The Grundfos 99886916 EPDM Gasket is a critical replacement component engineered to maintain airtight seals in high-demand hydronic and HVACR systems. Designed specifically for 1 1/4" and 1 1/2" flange sizes, these EPDM gaskets provide superior resistance to extreme temperature fluctuations, ozone exposure, and common water treatment chemicals. Unlike standard nitrile seals, the Ethylene Propylene Diene Monomer construction in this 2-pack gasket kit excels in hot water and steam service, remaining flexible in freezing conditions while resisting abrasion over long-term operation. As a direct replacement for Grundfos part number 91130185, this kit ensures a leak-proof seal for Grundfos circulator pumps and ISO valves. Professionals rely on these gaskets for residential and commercial heating repairs where maintaining system pressure and preventing fluid loss is paramount. Stocking the 99886916 gasket allows for immediate service of dual-sized flanges with a single, high-performance material that outlasts generic alternatives in outdoor or chemical-rich environments.
Key Benefits- Broad Compatibility: Dual-fit design accommodates both 1.25-inch and 1.5-inch Grundfos flange and ISO valve connections.
- High Temperature Resilience: EPDM material handles a wider thermal range than Buna-N, making it the standard for hydronic heating systems.
- Chemical & Ozone Resistance: Resists degradation from UV rays and water-based cleaning agents, ensuring long-term seal integrity.
- Cost-Effective 2-Pack: Provides genuine Grundfos parts for both the suction and discharge sides of a standard circulator pump installation.
Are these gaskets compatible with oil-based systems?
No. These EPDM gaskets are designed for water, steam, and glycol-based systems. Exposure to petroleum-based oils or grease will cause the material to swell and fail.
Can I use the 99886916 for both 1-1/4" and 1-1/2" pumps?
Yes. This specific circulator pump gasket is engineered with a geometry that provides a secure leak-proof seal for both flange sizes commonly found in residential hydronics.
Does this kit replace the older 91130185 part number?
Yes, this is the current Grundfos replacement part for the legacy 91130185 gasket, offering updated material durability for modern HVACR applications.
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 99886916 EPDM Gasket
The Grundfos 99886916 EPDM Gasket is a critical replacement component engineered to maintain airtight seals in high-demand hydronic and HVACR systems. Designed specifically for 1 1/4" and 1 1/2" flange sizes, these EPDM gaskets provide superior resistance to extreme temperature fluctuations, ozone exposure, and common water treatment chemicals. Unlike standard nitrile seals, the Ethylene Propylene Diene Monomer construction in this 2-pack gasket kit excels in hot water and steam service, remaining flexible in freezing conditions while resisting abrasion over long-term operation. As a direct replacement for Grundfos part number 91130185, this kit ensures a leak-proof seal for Grundfos circulator pumps and ISO valves. Professionals rely on these gaskets for residential and commercial heating repairs where maintaining system pressure and preventing fluid loss is paramount. Stocking the 99886916 gasket allows for immediate service of dual-sized flanges with a single, high-performance material that outlasts generic alternatives in outdoor or chemical-rich environments.
Key Benefits- Broad Compatibility: Dual-fit design accommodates both 1.25-inch and 1.5-inch Grundfos flange and ISO valve connections.
- High Temperature Resilience: EPDM material handles a wider thermal range than Buna-N, making it the standard for hydronic heating systems.
- Chemical & Ozone Resistance: Resists degradation from UV rays and water-based cleaning agents, ensuring long-term seal integrity.
- Cost-Effective 2-Pack: Provides genuine Grundfos parts for both the suction and discharge sides of a standard circulator pump installation.
Are these gaskets compatible with oil-based systems?
No. These EPDM gaskets are designed for water, steam, and glycol-based systems. Exposure to petroleum-based oils or grease will cause the material to swell and fail.
Can I use the 99886916 for both 1-1/4" and 1-1/2" pumps?
Yes. This specific circulator pump gasket is engineered with a geometry that provides a secure leak-proof seal for both flange sizes commonly found in residential hydronics.
Does this kit replace the older 91130185 part number?
Yes, this is the current Grundfos replacement part for the legacy 91130185 gasket, offering updated material durability for modern HVACR applications.
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
Product Information
Shipping & Returns
Shipping & Returns
Description
The Grundfos 99886916 EPDM Gasket is a critical replacement component engineered to maintain airtight seals in high-demand hydronic and HVACR systems. Designed specifically for 1 1/4" and 1 1/2" flange sizes, these EPDM gaskets provide superior resistance to extreme temperature fluctuations, ozone exposure, and common water treatment chemicals. Unlike standard nitrile seals, the Ethylene Propylene Diene Monomer construction in this 2-pack gasket kit excels in hot water and steam service, remaining flexible in freezing conditions while resisting abrasion over long-term operation. As a direct replacement for Grundfos part number 91130185, this kit ensures a leak-proof seal for Grundfos circulator pumps and ISO valves. Professionals rely on these gaskets for residential and commercial heating repairs where maintaining system pressure and preventing fluid loss is paramount. Stocking the 99886916 gasket allows for immediate service of dual-sized flanges with a single, high-performance material that outlasts generic alternatives in outdoor or chemical-rich environments.
Key Benefits- Broad Compatibility: Dual-fit design accommodates both 1.25-inch and 1.5-inch Grundfos flange and ISO valve connections.
- High Temperature Resilience: EPDM material handles a wider thermal range than Buna-N, making it the standard for hydronic heating systems.
- Chemical & Ozone Resistance: Resists degradation from UV rays and water-based cleaning agents, ensuring long-term seal integrity.
- Cost-Effective 2-Pack: Provides genuine Grundfos parts for both the suction and discharge sides of a standard circulator pump installation.
Are these gaskets compatible with oil-based systems?
No. These EPDM gaskets are designed for water, steam, and glycol-based systems. Exposure to petroleum-based oils or grease will cause the material to swell and fail.
Can I use the 99886916 for both 1-1/4" and 1-1/2" pumps?
Yes. This specific circulator pump gasket is engineered with a geometry that provides a secure leak-proof seal for both flange sizes commonly found in residential hydronics.
Does this kit replace the older 91130185 part number?
Yes, this is the current Grundfos replacement part for the legacy 91130185 gasket, offering updated material durability for modern HVACR applications.
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.












