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LO-CUS® Rubber Diaphragms are flexible elastomeric membranes used as seals and pressure transmitters in pneumatic, hydraulic, and industrial equipment. These diaphragms are designed to deform elastically when pressure is applied and return to their original shape after the pressure is removed.
1. Product Description
LO-CUS® Rubber Diaphragms are flexible elastomeric membranes used as seals and pressure transmitters in pneumatic, hydraulic, and industrial equipment. These diaphragms are designed to deform elastically when pressure is applied and return to their original shape after the pressure is removed.
They are manufactured using high-grade rubber compounds like Nitrile, EPDM, Neoprene, Silicone, and Viton to ensure durability, chemical resistance, and temperature tolerance.
2. Specification
Specification | Value / Range |
Material | NBR, EPDM, Neoprene, Silicone, Viton |
Tensile Strength | ≥ 10 MPa (material dependent) |
Elongation at Break | ≥ 250% |
Hardness | 40-90 Shore A |
Fabric Reinforcement | Yes (optional) |
Operating Pressure | Up to 20 bar |
Operating Temperature | -40°C to +250°C |
Chemical Resistance | Excellent (Oil, Fuel, Acids, Alkalis etc.) |
Custom Sizes & Shapes | Available on request |
3. Working
The diaphragm works by flexing back and forth under pressure or vacuum without permitting fluid or air to pass through. It isolates different process mediums while transferring force or movement, maintaining a sealed environment.
4. Principle
A diaphragm operates on the principle of elastic deformation. It flexes under applied pressure or vacuum and reverts to its original shape when pressure normalizes. It transmits mechanical motion or pressure without fluid transfer.
5. Assembly
6. Installation Process
7. Technical Specification (Material-wise)
Property | Nitrile (NBR) | EPDM | Silicone | Viton |
Temp. Range | -30°C to +110°C | -40°C to +140°C | -60°C to +230°C | -20°C to +250°C |
Oil Resistance | Excellent | Poor | Moderate | Excellent |
Acid Resistance | Fair | Good | Good | Excellent |
FDA Grade | Optional | Yes | Yes | Yes |
Fabric Reinforced | Yes (optional for all materials) |
8. Troubleshooting
Issue | Cause | Solution |
Diaphragm rupture | Overpressure / wrong material | Check pressure limits, select suitable material |
Leakage | Improper installation | Reinstall with proper alignment and torque |
Stiff or non-responsive | Aged or hardened diaphragm | Replace with fresh diaphragm |
Chemical corrosion | Incompatible medium | Use Viton/Silicone based on chemical |
9. HS Code
HS Code: 4016.93.00
Description: Gaskets, washers, and other seals of vulcanized rubber (excluding hard rubber)
10. FAQs
Q1. Can Locus provide FDA-grade diaphragms?
✅ Yes, we offer FDA-compliant Silicone & EPDM diaphragms on request.
Q2. What is the MOQ for custom diaphragms?
✅ MOQ is 100 pcs, but may vary based on size and design.
Q3. Can you provide export documentation & CE certificate?
✅ Yes, CE, ISO, COO, and all documentation are provided.
Q4. Do you support white-label or OEM orders?
✅ Yes, LO-CUS® specializes in OEM and white-label manufacturing.
Q5. Which diaphragm material is best for oil?
✅ Nitrile and Viton are most suitable for oil and fuel.
11. Applications
Locus International Exports – Delivering precision-engineered solutions worldwide. Trusted for quality, reliability, and seamless global trade.
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