
Midco International 843207 O-Ring
As a veteran tech, you know that a failed seal on a Midco International gas burner isn't just a nuisance—it’s a safety risk and a service callback waiting to happen. The Midco 843207 O-Ring is a critical HVAC replacement part engineered specifically for high-demand combustion environments. Molded from 70 Shore A Nitrile Rubber (NBR), this component provides the exact durometer hardness required to maintain a gas-tight seal between mating surfaces under pressure. Designed to withstand a steady temperature range of -40°F to +250°F and surge pressures up to 2,000 psi, this industrial sealing ring is a staple for maintaining Unipower and Economite series burners. Whether you are performing a burner tune-up or troubleshooting a pressure drop, using an OEM Midco O-ring ensures the mechanical integrity of the gas train. Don't risk air leaks or fuel bypass with generic hardware-store alternatives; this precision-engineered elastomer is built for chemical resistance against common fuel gases and lubricating oils found in the field.
Key Benefits:- High-Pressure Integrity: Rated for up to 2000 psi, ensuring it handles the standard operating pressures of industrial gas power burners without extrusion.
- Nitrile Durability: The 70 Shore A NBR material offers excellent resistance to petroleum-based oils and common hydraulic fluids, preventing premature degradation.
- Thermal Stability: Consistently maintains its 1750 psi tensile strength across a wide temperature range, making it ideal for both cold-start and high-heat burner applications.
- Exact OEM Fit: Specifically sized for Midco burner maintenance, eliminating the guesswork of caliper measurements during an emergency service call.
- What causes this O-ring to fail prematurely? Most field failures are due to abrasion from uncleaned mating surfaces or assembly damage. Always inspect the gland for burrs and use a compatible lubricant during O-ring installation.
- Can I swap this with a Viton ring? While Viton handles higher heat, this Nitrile O-ring is the manufacturer-specified part for these Midco gas components. Stick to the 843207 part number to ensure proper sealing performance and material compatibility.
- Is this compatible with propane systems? Yes, the NBR material is highly resistant to both natural gas and propane, provided the system temperatures remain within the -40°F to +250°F spec.
This item is not eligible for free shipping.
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.
Midco International 843207 O-Ring
As a veteran tech, you know that a failed seal on a Midco International gas burner isn't just a nuisance—it’s a safety risk and a service callback waiting to happen. The Midco 843207 O-Ring is a critical HVAC replacement part engineered specifically for high-demand combustion environments. Molded from 70 Shore A Nitrile Rubber (NBR), this component provides the exact durometer hardness required to maintain a gas-tight seal between mating surfaces under pressure. Designed to withstand a steady temperature range of -40°F to +250°F and surge pressures up to 2,000 psi, this industrial sealing ring is a staple for maintaining Unipower and Economite series burners. Whether you are performing a burner tune-up or troubleshooting a pressure drop, using an OEM Midco O-ring ensures the mechanical integrity of the gas train. Don't risk air leaks or fuel bypass with generic hardware-store alternatives; this precision-engineered elastomer is built for chemical resistance against common fuel gases and lubricating oils found in the field.
Key Benefits:- High-Pressure Integrity: Rated for up to 2000 psi, ensuring it handles the standard operating pressures of industrial gas power burners without extrusion.
- Nitrile Durability: The 70 Shore A NBR material offers excellent resistance to petroleum-based oils and common hydraulic fluids, preventing premature degradation.
- Thermal Stability: Consistently maintains its 1750 psi tensile strength across a wide temperature range, making it ideal for both cold-start and high-heat burner applications.
- Exact OEM Fit: Specifically sized for Midco burner maintenance, eliminating the guesswork of caliper measurements during an emergency service call.
- What causes this O-ring to fail prematurely? Most field failures are due to abrasion from uncleaned mating surfaces or assembly damage. Always inspect the gland for burrs and use a compatible lubricant during O-ring installation.
- Can I swap this with a Viton ring? While Viton handles higher heat, this Nitrile O-ring is the manufacturer-specified part for these Midco gas components. Stick to the 843207 part number to ensure proper sealing performance and material compatibility.
- Is this compatible with propane systems? Yes, the NBR material is highly resistant to both natural gas and propane, provided the system temperatures remain within the -40°F to +250°F spec.
This item is not eligible for free shipping.
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.
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Description
As a veteran tech, you know that a failed seal on a Midco International gas burner isn't just a nuisance—it’s a safety risk and a service callback waiting to happen. The Midco 843207 O-Ring is a critical HVAC replacement part engineered specifically for high-demand combustion environments. Molded from 70 Shore A Nitrile Rubber (NBR), this component provides the exact durometer hardness required to maintain a gas-tight seal between mating surfaces under pressure. Designed to withstand a steady temperature range of -40°F to +250°F and surge pressures up to 2,000 psi, this industrial sealing ring is a staple for maintaining Unipower and Economite series burners. Whether you are performing a burner tune-up or troubleshooting a pressure drop, using an OEM Midco O-ring ensures the mechanical integrity of the gas train. Don't risk air leaks or fuel bypass with generic hardware-store alternatives; this precision-engineered elastomer is built for chemical resistance against common fuel gases and lubricating oils found in the field.
Key Benefits:- High-Pressure Integrity: Rated for up to 2000 psi, ensuring it handles the standard operating pressures of industrial gas power burners without extrusion.
- Nitrile Durability: The 70 Shore A NBR material offers excellent resistance to petroleum-based oils and common hydraulic fluids, preventing premature degradation.
- Thermal Stability: Consistently maintains its 1750 psi tensile strength across a wide temperature range, making it ideal for both cold-start and high-heat burner applications.
- Exact OEM Fit: Specifically sized for Midco burner maintenance, eliminating the guesswork of caliper measurements during an emergency service call.
- What causes this O-ring to fail prematurely? Most field failures are due to abrasion from uncleaned mating surfaces or assembly damage. Always inspect the gland for burrs and use a compatible lubricant during O-ring installation.
- Can I swap this with a Viton ring? While Viton handles higher heat, this Nitrile O-ring is the manufacturer-specified part for these Midco gas components. Stick to the 843207 part number to ensure proper sealing performance and material compatibility.
- Is this compatible with propane systems? Yes, the NBR material is highly resistant to both natural gas and propane, provided the system temperatures remain within the -40°F to +250°F spec.
This item is not eligible for free shipping.
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.












