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Linda.MSince collaborating with Hongum in 2020, their marine-grade rubber diaphragms and industrial shock absorbers have delivered zero-failure performance, ensuring uninterrupted operations for our port cranes, dredger propulsion systems, and LNG carrier equipment.
Sulfur Cured Natural Rubber Valve Diaphragm High Elasticity 55 Shore A Pneumatic Actuator OEM
| Place of Origin | Guangdong, China |
|---|---|
| Brand Name | WNRLN |
| Certification | ISO 9001:2015 |
| Model Number | VRD-NR-SC55 |
| Minimum Order Quantity | 100 Pieces |
| Price | USD 0.60-5.00 / Piece |
| Packaging Details | Bulk polybag packaging, export-grade corrugated carton |
| Delivery Time | 3-5 days for stock, 10-15 days for production |
| Payment Terms | T/T, L/C, PayPal, Western Union |
| Supply Ability | 150000 Pieces per Month |
| Material | NR (Natural Rubber) | Curing | Sulfur Cured |
|---|---|---|---|
| Hardness | 55 +/-5 Shore A | Elongation At Break | Up To 600% |
| Tensile Strength | 18 MPa Minimum | Temperature Range | -50C To +80C |
| Color | Black | ||
| Highlight | Sulfur cured rubber valve diaphragm,High elasticity pneumatic actuator diaphragm,OEM natural rubber valve diaphragm |
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Sulfur Cured Natural Rubber Valve Diaphragm
Traditional sulfur-cured natural rubber (NR) diaphragm providing best-in-class elasticity and tensile strength at competitive pricing. The preferred choice for pneumatic actuator and general industrial valve applications where cost-effectiveness is key.
Key Features
- Material: Natural Rubber (NR), sulfur cured
- Elasticity: Maximum elongation at break (up to 600%)
- Hardness: 55 ±5 Shore A for optimal flexibility
- Tensile Strength: ≥18 MPa
- Temperature Range: -50°C to +80°C
- Cost Efficiency: Most economical diaphragm material option
- Reinforcement: Nylon fabric insert available
- OEM: Custom sizes and shapes per drawing
Applications
Pneumatic actuator diaphragms, general industrial control valves, water distribution systems, air-operated equipment, and applications where extreme chemical resistance is not required.
Quality Assurance
Standard dimensional inspection and tensile testing per batch. ISO 9001:2015 certified manufacturing.

