🔧 100208088 Lochinvar Door Gasket (Rubber) – Replaces GKT2455K
The Lochinvar 100208088 is a rubber door gasket designed to provide a reliable, air-tight seal for Lochinvar boilers and water heaters. This gasket prevents heat loss and ensures proper system efficiency and safety during operation.
✅ Key Features
✅ Genuine Lochinvar replacement part
✅ High-temperature rubber construction for long-lasting durability
✅ Maintains a tight seal to prevent heat or gas leakage
✅ Helps ensure optimal boiler performance and efficiency
✅ Simple, direct replacement for worn or damaged door gaskets
⚙️ Specifications
| Specification | Details |
|---|
| Manufacturer |
Lochinvar |
| Part Number |
100208088 |
| Material |
Rubber |
| Type |
Door Gasket |
| Replaces |
100146555, GKT2455, GKT2455K |
| Application |
Boiler Door Seal |
⚠️ Common Symptoms of a Worn Door Gasket
If your Lochinvar boiler’s gasket is failing, you may notice:
✅ Heat escaping around the door area
✅ Visible cracks or flattening on the gasket
✅ Unstable combustion or loss of efficiency
✅ Soot buildup around the door edge
✅ Minor gas or exhaust leakage near the seal
When any of these symptoms appear, replacing the gasket helps maintain safe and efficient operation.
🔄 Cross Reference
| Old/Alternate Part Number | Replaced By |
|---|
| 100146555 |
100208088 |
| GKT2455 |
100208088 |
| GKT2455K |
100208088 |
🧰 Used With
❓ Frequently Asked Questions (FAQ)
Q1: What does the Lochinvar 100208088 gasket replace?
➡️ It replaces older part numbers GKT2455K, GKT2455, and 100146555, providing a direct fit for compatible Lochinvar boilers.
Q2: How do I know if I need to replace my boiler door gasket?
➡️ Common signs include heat escaping around the door, visible cracks or flattening, soot buildup, or decreased efficiency. If any of these occur, replacement is recommended.
Q3: Can I install this gasket myself?
➡️ Yes, it is designed for direct replacement. Ensure the boiler is off and cooled before removing the old gasket and installing the new one.
Q4: What material is the gasket made of?
➡️ The 100208088 gasket is made of high-temperature rubber, designed for durability and long-term performance.
Q5: Will replacing this gasket improve my boiler’s efficiency?
➡️ Yes, a properly sealed door prevents heat loss, maintains stable combustion, and ensures the boiler runs efficiently and safely.
Q6: Is this gasket compatible with all Lochinvar boilers?
➡️ It is compatible with models that originally used GKT2455K, GKT2455, or 100146555. Always check your boiler’s part number before purchasing.
