Maxitrol KR-9112 Seal Cap

The Maxitrol KR-9112 is a professional-grade seal cap and gasket replacement kit engineered specifically for the RV91 and 210E series gas pressure regulators. As a critical component for maintaining the integrity of your gas train, this Maxitrol replacement part ensures a gas-tight seal on the regulator stack, preventing debris infiltration and protecting the adjustment screw settings from tampering or environmental exposure. Field technicians know that a compromised seal cap can lead to pressure fluctuations; the KR-9112 provides the exact tolerances required for RV91-2 and 210E-1-1/2 to 210E-2 high-capacity models.

Found primarily in industrial boilers, steam generators, and large-scale furnaces, these regulators rely on the KR-9112 to maintain their CSA design certification for 1/2 PSI rated pressure. The included high-performance regulator gasket is designed to withstand the ambient temperature ranges typical of mechanical rooms, from -40°F to 205°F. Whether you are performing routine maintenance or a full teardown on a straight-thru-flow regulator, using the genuine Maxitrol KR-9112 is the only way to ensure 100% compatibility with the original equipment manufacturer's specifications.

• Precision Compatibility: Designed specifically for use with Maxitrol RV91 and 210E series regulators to ensure a perfect mechanical fit.
• System Integrity: The Maxitrol KR-9112 includes a specialized seal cap gasket to prevent gas leakage at the stacks.
• Environmental Protection: Shields internal components from dust, moisture, and corrosion in demanding HVACR environments.
• Durable Construction: Manufactured with materials resistant to natural gas, LP gas, and propane-air mixtures.
• Field Reliable: Provides a secure, tamper-resistant cover for sensitive gas pressure regulator adjustment points.

Which regulator models use the KR-9112 seal cap?
This kit is the correct replacement for Maxitrol RV91-2, 210E-1-1/2, and 210E-2 series units. If you are servicing the RV81 or 210D, you will typically require the KR-8112 instead.

Does this kit include the gasket or is it sold separately?
The KR-9112 is a complete assembly that includes both the threaded seal cap and the matching regulator gasket required for a proper seal. It is not recommended to reuse old gaskets when replacing the cap.

Is this part suitable for outdoor installations?
Yes, when used with a certified Maxitrol RV91 or 210E regulator, this cap helps protect the internal stack. For full outdoor weatherproofing, it should be used in conjunction with the appropriate 13A25 vent protector set.

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.