Description
The ED960 is a high-speed double cartridge mechanical seal with an integrated bearing, designed for top- and side-entry homogenizers, high-shear mixers and emulsifiers. The integrated deep-groove ball bearing guides the shaft inside the seal cartridge, so both seal faces stay aligned when the shaft runs out or deflects at high speed.
The inboard seal runs silicon carbide against silicon carbide for hard, abrasive or crystallising product films; the outboard seal runs resin-impregnated carbon against silicon carbide on clean barrier or buffer fluid. FDA-compliant elastomers make the ED960 suitable for food, dairy, cosmetic and pharmaceutical processing. The CI (inlet) and CO (outlet) ports allow operation with a pressurised barrier fluid (API Plan 53A), an unpressurised buffer fluid (API Plan 52) or cooling water.
Technical Key Features
- · Integrated bearing absorbs shaft runout and deflection at high speed, keeping both seal faces aligned.
- · Double seal arrangement isolates the product from atmosphere for sterile, hazardous or volatile duties.
- · SiC / SiC inboard faces for hard, abrasive or crystallising product films.
- · Carbon / SiC outboard faces run on clean barrier or buffer fluid with low heat generation.
- · FDA-compliant elastomers (FDA 21 CFR 177.2600); USP Class VI on request.
- · Factory-assembled cartridge, pre-set with setting clips for repeatable installation.
- · CI / CO ports for API Plan 53A, API Plan 52 or cooling water.
- · Re-greasable bearing via grease nipple; lip seals protect the bearing from contamination.
- · Lifting eye bolts for safe handling on top-entry vessels.
Service Overview
| Parameter | Value |
|---|---|
| Equipment | High-speed homogenizers, high-shear mixers and emulsifiers – top and side entry |
| Seal Type | Double cartridge mechanical seal with integrated bearing |
| Support System | API Plan 53A (pressurised barrier), API Plan 52 (unpressurised buffer) or cooling water via CI / CO ports |
| Typical Media | Food, dairy, cosmetic, pharmaceutical, paint, ink, resin and chemical products |
Specifications
| Item | Min | Max | Typical / Notes |
|---|---|---|---|
| Size | 20.0 mm (0.787″) | 300.0 mm (11.811″) | Shaft diameter |
| Pressure | Full vacuum | 16 bars (232 psi) | Vessel pressure; Plan 53A barrier min. 1.4 bar (20 psi) above vessel pressure |
| Temp | -20°C (-4°F) | +150°C (+302°F) | Up to +200°C (+392°F) with cooling and suitable elastomer |
| Speed | — | 3,600 rpm | Max. 20 m/s (3,940 fpm) face sliding velocity; subject to size and bearing rating |
Materials
| Component | Standard Material | Optional Material | Comment |
|---|---|---|---|
| Inboard Seal Faces | Silicon Carbide / Silicon Carbide | — | For hard, abrasive or crystallising product films |
| Outboard Seal Faces | Carbon (resin-impregnated, antimony-free) / Silicon Carbide | — | Runs on clean barrier or buffer fluid |
| Secondary Seals | FDA-compliant EPDM / FKM (Viton) / FFKM | USP Class VI on request | Selected for product, cleaning agents and temperature |
| Hardware | SS 304 / SS 316 / SS 316L / Duplex / Hastelloy C / Alloy 20 | — | Selected for product and cleaning chemistry |
| Bearing | Deep-groove ball bearing, grease-lubricated | — | Re-greasable via grease nipple; lip-seal protected |
Applications
- · High-speed homogenizers (top and side entry).
- · High-shear mixers and emulsifiers.
- · Vacuum mixing and processing vessels.
- · Dispersers and dissolvers.
- · Dairy and food processing.
- · Pharmaceutical and bulk drug processing.
- · Cosmetics and personal care.
- · Paints, inks and resins.
- · Chemical processing.
Operating Limits
| Parameter | Value |
|---|---|
| Pressure | Full vacuum to 16 bars (232 psi) |
| Temp | -20°C to +150°C (-4°F to +302°F); up to +200°C (+392°F) with cooling |
| Speed | Up to 3,600 rpm; max. 20 m/s (3,940 fpm) face sliding velocity |
| Size Range | 20.0 mm to 300.0 mm (0.787″ to 11.811″) |
Operating limits are not simultaneous; final selection depends on size, speed, pressure, temperature and media.
Product Guide: Download the ED960 Product Guide (PDF, 1 page)
