Taco 007-003RP Replacement Casing O-Ring for Select 003 - 007 Models
A replacement casing O-ring used on select Taco circulator pumps to reseal the casing and stop leaks during pump service.
Key Features:
- Replacement casing O-ring (pump service part)
- Product highlights list it for 003 Series, 005 Series, 006 Series, and 007 Series
- Listed specs on the product page: Application: Heating; Type: Pump Part
- Product Q&A confirms the gasket material is EPDM and notes EPDM is not recommended to contact petroleum products (can be damaged)
Compatibility & Applications:
- Listed "Used With" series: 003 Series, 005 Series, 006 Series, 007 Series
- Taco's replacement parts list for "00 Circulators" shows this casing O-ring part number used across multiple pump model numbers (model-specific)
- Must only be used where the manufacturer specifies this exact part number: 007-003RP
Installation & Operation Notes:
- Installation should be performed by a qualified hydronic/heating technician or experienced service professional
- Reference the pump's service/installation documentation and the manufacturer's replacement parts list for the exact model to confirm the correct casing O-ring part number
- Important material note from Q&A: if you use any lubricant, avoid petroleum-based products because EPDM can be damaged by petroleum contact
- Manufacturer replacement parts documentation notes that casing O-ring replacement parts include casing body bolts
Maintenance & Troubleshooting:
- Reviews consistently tie this O-ring replacement to fixing leaks/drips at the pump casing without needing to replace the whole circulator or disturb piping
- Multiple reviewers note the package includes two O-rings (thin and thick) and that choosing the correct one for their pump stopped the leak
- If a leak continues after replacement, reviews suggest trying the alternate thickness (when applicable) and verifying proper seating during reassembly
User Reviews & Q&A Summary:
- Review themes: restores a leaking circulator to service, avoids replacing the entire pump, and is viewed as a practical repair part despite being "just an O-ring"
- Several users describe the original O-ring as old/brittle and report the replacement stopped the leak immediately
- Q&A theme: confirmation of EPDM material and guidance to avoid petroleum products in contact with the gasket material to prevent damage