The Heater O-Ring/Gasket, Waterway, 3" (60-0020-K) is a precise replacement seal designed for pool and spa heaters. Built for reliability, it helps maintain a tight, leak-free connection at the waterway union, making maintenance and service easier for both homeowners and technicians.
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Inside Diameter: 2-3/4" (ID)
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Outside Diameter: 3-1/4" (OD)
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Thickness: 1/8"
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Part Type: O-Ring/Gasket for heater waterway connections
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Application: 3" heater unions; designed to seal the waterway interface and prevent leaks
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Manufacturer: Therm Products
Therm Products is a trusted name in pool and spa maintenance, delivering dependable, purpose-built seals that technicians rely on to keep heaters operating efficiently. This gasket is a straightforward, durable replacement that restores a snug fit, minimizes downtime, and protects against water intrusion at the heater union.
| Heater Union Part Type |
Heater Gasket |
| Part Type |
Gasket |
| Inside Diameter |
2-3/4" id |
| Outside Diameter |
3-1/4" od |
| Union Fitting Part Type |
O-Ring/Gasket |
| Manufacturer |
Generic |
