Top quality Pellethead replacement 3/8? diameter x 8? length gasket seal kit for Harman pellet, wood, and coal stove models. This is the correct gasket replacement for the Heatilator BH60 pellet boiler model. For most units this will be the firebox door gasket seal. For the Advance pellet stove this will be the ash pan door gasket, and for P-Series pellet stove models this will be the firebox door and ash pan door gasket. For Harman woodstove models this gasket is used as a damper plate gasket, top gasket, and load door gasket. Harman coal stove models will use this as a firebox door and ash pan door gasket. Please see our model notes below for specific applications based on the model. Our gasket kit includes high temperature sealant and will replace Harman (HHT) factory part numbers 3-44-00888 and 1-00-00888. Fiberglass Rope Gasket Seal Kit with High Temperature Silicone Sealant Guaranteed Newest Stock Inventory No Manufacturer Warranty on Gaskets. We do guarantee product to arrive in brand new perfect condition. Size: 3/8" diameter x 8' length fiberglass rope gasket. Installation: High temperature silicone sealant included. Be sure to scrape away as much old silicone as possible before installing the new gasket. Do not bunch or stretch the new gasket when installing in the door groove. Let set-up for a minimum of 1 hour before closing the ash pan door. Harman Pellet Absolute 63 Accentra 52I Accentra 52i-TC Accentra FS (Accentra Cast) Accentra Insert Advance HydroFlex 60 (HF60) Boiler Invincible Insert Invincible RS P35I Insert P38 (P38+, PP38+) P43 P61 P61A P68 PC45 XXV (25th Anniversary Model) XXV-TC Harman Wood Coal 300i 44 Magnum Exception F200 Insert Mark I Oakleaf Oakwood Super Mag Stoker TL 2.0 TL 2.6 TL200 Exception TL300 TLC2000 WIN Heatilator Pellet BH60 Harman Pellet Gasket Note Advance ? Ash door. Very Early Models used a rubber style silicone gasket. If you have this style, please contact us for assistance. All P-Series Models this will be the gasket for the front fire door and ash pan door. Harman Wood Coal Gasket Note Exception F200 Insert ? Damper Plate Oakwood ? Top, Load Door and Damper TL300 ? Fire Door 300i ? Fire Door and Damper Super Mag Stoker ? Fire Door Ash Door 44 Mag ? Fire Door