

The RINNAI O-RING GAS TEST PORT SCREW (Part Number: M10B-13-4) is a crucial gasket & seal for your RIN Water Heater, ensuring a tight and secure gas connection. Compatible with various RINNAI models, including specific models X, Y, and Z. This high-quality o-ring screw offers a reliable seal that lasts up to 10 years, supporting gas pressures up to 50 psi. Installation is a breeze and can be done in under 5 minutes with common tools.