Francis Francis X7/X7.1 Group O-Ring Seal
$0.93
Description
Espresso Machine Group Seal Kit
Eliminate handle-group leaks with our precision-engineered replacement gasket (Part #ESG-920). Designed for commercial-grade durability in home and café environments.
Critical Problem Solved:
Prevents coffee oil leakage at the portafilter interface – common in high-use scenarios like:
✔️ Daily home espresso routines
✔️ Café line operations (50+ brews/day)
✔️ Commercial machine servicing
Technical Specifications:
• 19mm outer diameter (±0.1mm tolerance)
• 3mm compressed thickness (meets ECM/FAEMA standards)
• Dual-layer construction: NBR exterior + food-grade silicone core
• Operating range: -20°C to 230°C (-4°F to 446°F)
Installation Guide:
1. Remove portafilter handle assembly
2. Clean mating surfaces with isopropyl alcohol
3. Align centering notch with brew group channel
4. Compress using standard service tools (included in Pro Kits)
Performance Comparison:
| Specification | Economy Gaskets | Professional Grade |
|---|---|---|
| Oil Resistance | 30% failure @6mo | 98% retention @12mo |
| Temperature Stability | 150°C max | 230°C continuous |
| Tamp Pressure Handling | <25kgf | Up to 35kgf |
| Average Service Life | 80 brew cycles | 300+ brew cycles |
Pro Tip: Replace every 6 months or when:
⚠️ Visual compression rings appear
⚠️ Extraction time increases by >15%
⚠️ Machine requires >3 tamping attempts per brew
Includes 3x precision-cut seals (fits La Pavoni PB70/75, ECM Synchronika, Gaggia Classic Pro) and instructional QR code for video installation walkthrough.
