HHT Ceramic Insert Plate Gasket – 3-44-237639 (20731-2)

HHT Ceramic Insert Plate Gasket – 3-44-237639 (20731-2)

Restore a proper seal between your burn pot and stove wall with the HHT Ceramic Insert Plate Gasket (Part# 3-44-237639). Designed for Harman and Heatilator pellet stoves, inserts, and boilers, this high-temperature gasket fits between the burn pot and the stove wall—especially for systems that use overfire air inlet burn pots. Engineered from durable ceramic fiber, it ensures optimal combustion efficiency and long-lasting sealing performance.

Key Features:

• OEM Replacement – Designed for burn pots with overfire primary air inlets
• High-Temperature Performance – Withstands intense heat in the burn chamber
• Easy Installation – Replace by removing four 1/2" mounting nuts
• Multi-Model Compatibility – Works with 1-00-06723, 1-00-574605, and 1-10-00675 burn pots

Specifications:

• Gasket Material: High-temp ceramic fiber
• Gasket Dimensions: 6" long x 4 1/2" wide
• Auger Inlet Hole: 2 3/8" diameter
• Replacement Part Number: 3-44-237639
• SKU: 20731-2

Compatible Harman Models:

• Absolute 43, Absolute 43-C
• Accentra 52i, Accentra 52i TC, Accentra Insert
• Advance, HF60
• P43, P43-C
• P68, P68-C
• PB105
• PC45 (Pre: 008055950)
• PF100 (Post: 008350087)
• XXV, XXV TC

Compatible Heatilator Eco Choice Models:

• BA100 (Post: 008350087)
• BH105
• BH60

When to Replace:

• During burn pot removal or replacement
• If burn pot seal is compromised or shows carbon buildup around mounting points
• When switching or servicing overfire burn pot systems

Why Choose Our HHT Ceramic Insert Plate Gasket?

The HHT Ceramic Insert Plate Gasket is built for precision fit, heat resistance, and OEM-quality reliability. Replacing a worn or degraded gasket ensures proper airflow control, clean combustion, and improved stove efficiency. Keep your pellet stove operating safely and efficiently — order your HHT Ceramic Insert Plate Gasket today!