MOR Type 1 is a versatile, robust, and cost‑effective elastomer bellows seal for general‑to‑moderate service conditions. Its simple single‑spring design, self‑alignment, and non‑clogging nature make it a top choice for reliable sealing in countless rotating equipment applications worldwide.
Operating Parameters
| Parameter | Specification |
| Temperature | -40°C to 205°C (-40°F to 400°F) (depends on elastomer) |
| Pressure (Type 1) | Up to 29 bar(g) (425 psi(g)) |
| Pressure (Type 1B) | Up to 82 bar(g) (1200 psi(g)) |
| Speed | Typically ≤ 15 m/s (3000 fpm) |
Material Options (Standard & Customizable)
| Component | Available Materials |
| Seal Faces | Carbon, Silicon Carbide (SiC), Tungsten Carbide (TC), Ceramic |
| Elastomers | NBR, EPDM, Viton, PTFE, FFKM |
| Metal Parts | 304/316 stainless steel |
Performance Advantages
1. Mechanical Drive System
Drive band and notches absorb startup/running torque, preventing bellows overstress and shaft/sleeve wearJohn Crane.
2. Self‑Aligning & Self‑Adjusting
Compensates for shaft end play, radial runout, face wear, and equipment misalignment; uniform spring pressure handles axial/radial movementJohn Crane.
3. Non‑Clogging Single Spring
More reliable than multi‑spring designs; resists fouling by solids or debris in the process fluidJohn Crane.
4. Low Drive Torque
Reduces power consumption and extends seal lifeJohn Crane.
5. Balanced Option (Type 1B)
For higher pressures (up to 82 bar(g) / 1200 psi(g)) and speeds, minimizing face wear.
Applications
Pumps: Centrifugal, end‑suction, and process pumps (clean to slightly contaminated fluids).
Agitators/Mixers: Chemical and food processing vessels.
HVAC & Water: Cooling towers, boilers, and wastewater pumps.
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