EN118681LF Elite Buna Seal Kit No. 7 – Replacement for Bell & Gossett 118681LF
The EN118681LF Elite Buna Seal Kit No. 7 is a premium aftermarket replacement engineered for long-lasting sealing performance in hydronic, HVAC, and plumbing systems. Built with durable Buna (Nitrile) material, this seal kit delivers reliable resistance against water, glycol, and other common system chemicals, making it an ideal choice for both residential and commercial pump applications.
🔑 Key Features
✅ OEM-quality performance at a more cost-effective price
✅ Built with durable Buna (Nitrile) material for chemical resistance & longevity
✅ Direct replacement for Bell & Gossett 118681LF and Armstrong equivalents
✅ Designed for leak-free, long-lasting operation
✅ Compatible with dozens of pump models across B&G and Armstrong
📊 Quick Compatibility Reference Table
| Brand | Pump Series | Compatible Models |
|---|
| Bell & Gossett |
100 Series |
100, 100-BI, 100-AB, 100-BNFI |
| |
HV Series |
HV, HV-BI, PR, PR-BI |
| |
LD & HD Series |
LD3, LD3-BI, HD3, HD3-BI |
| |
PD Series |
PD35S, PD37S, PD35T, PD37T, PDB35S, PDB37S, PDB35T, PDB37T |
| |
Bearing Assemblies |
118844, 189134, 189034, 189105 |
| |
Obsolete Series |
1", 1¼", 1½", 2", 60 Series, 90 Series, 1522 Series |
| Armstrong |
S-Series |
S-25, S-35, S-45, S-46, S-55, S-57 |
| |
H-Series |
H-32, H-41, H-51, H-52, H-53, H-54 |
| |
1050 Series |
1050-1B, 1050-1¼B, 1050-1½B, 1050-2B |
🔁 Replaces OEM Part Numbers
-
Bell & Gossett: 118681, 118681LF
-
Armstrong: 816706-001, 816706-021
-
Hydro-Valve: RM-880W, RM-880-W
⚠️ Common Symptoms of Seal Failure
If your pump shows these issues, the seal kit likely needs replacement:
✅ Visible water leakage at the pump shaft
✅ Bearing assembly noise or overheating
✅ Loss of pressure or reduced flow performance
✅ Signs of corrosion, wear, or cracked seal faces
💡 Product Highlights
✅ Reliable aftermarket replacement for Bell & Gossett Buna Seal Kit No. 7
✅ Designed for durability and leak-free operation
✅ Protects pumps from premature bearing and shaft damage
✅ Cost-effective solution for extending pump service life
❓ Frequently Asked Questions (FAQ)
Q: Is this seal kit lead-free?
A: Yes, the EN118681LF is manufactured lead-free to meet modern standards.
Q: Can I use this on both Bell & Gossett and Armstrong pumps?
A: Yes — this kit is a direct replacement for B&G 118681LF and Armstrong equivalents.
Q: How do I know if I need to replace my seal kit?
A: Look for leaks around the pump shaft, unusual noise, or performance loss — these are common signs of seal failure.
Q: Does it come with installation instructions?
A: While instructions are not included, standard pump rebuild procedures apply. Many service manuals for your pump model outline installation.
