🔧 G-20C SSC Flange Gasket for Grundfos Circulators (510179)
🧭 Product Overview
The G-20C SSC Flange Gasket is a precision-fit replacement designed for Grundfos circulator pumps. This durable gasket provides a tight, leak-free seal between the pump flange and the pipe connection, ensuring reliable system performance and preventing costly leaks. Ideal for both residential and light commercial hydronic systems, it’s built from high-quality synthetic materials to resist heat, pressure, and chemical wear.
✅ Key Features
✔️ Perfect Fit: Specifically sized for Grundfos circulator flanges.
✔️ Leak-Proof Seal: Prevents water seepage and pressure loss.
✔️ Durable Construction: Made from high-quality SSC material for long service life.
✔️ Easy Installation: Simple replacement with standard flange hardware.
✔️ Universal Use: Compatible with multiple Grundfos models and similar 2-bolt flange systems.
📏 Specifications
| Specification | Details |
|---|
| Part Number |
510179 |
| Model |
G-20C SSC |
| Application |
Grundfos Circulator Pumps |
| Outer Diameter (OD) |
2-3/16" |
| Inner Diameter (ID) |
1-13/16" |
| Material |
SSC (Synthetic Seal Compound) |
| Type |
Flat Flange Gasket |
| Function |
Seal between pump flange and piping connection |
| Installation |
Fits standard 2-bolt flange mounts |
⚠️ Common Symptoms of a Worn Gasket
-
Water leaking from pump flange area
-
Visible cracks, flattening, or distortion in old gasket
-
Air entering hydronic loop (gurgling noises)
-
Drop in system pressure or pump efficiency
💬 (FAQ) Frequently Asked Questions
Q: Will this gasket fit all Grundfos circulator models?
A: It fits most common Grundfos pumps that use 2-bolt flanges — always verify dimensions before purchase.
Q: Should I replace both gaskets at once?
A: Yes, replacing both flange gaskets during service ensures a uniform, reliable seal.
Q: Do I need sealant or adhesive?
A: Typically no — install dry unless otherwise specified by your pump’s service manual.
🛒 Shopping Tips
-
Always check your pump model and flange size before ordering.
-
Keep a spare gasket set on hand for maintenance or emergency repairs.
-
Replace gaskets whenever the circulator is removed or serviced to ensure proper sealing.
