Reinforced Diaphragms
A reinforced diaphragm is a composite structure diaphragm in which one or more layers of high-strength fabric or metal skeleton are embedded in an elastic rubber body, thereby significantly improving its mechanical properties.
In situations where high pressure, high frequency, large stroke, or pressure spikes are required, pure rubber diaphragms may experience premature fatigue rupture due to insufficient strength. By introducing reinforcing materials, the reinforced diaphragm achieves extremely high tensile strength, tear resistance, and dimensional stability while maintaining necessary elasticity, greatly extending its service life and reliability.
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Item |
Nonstandard Custom Made OEM Food Grade EPDM Fabric Reinforced Rubber Diaphragm |
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Material |
EPDM, NBR, SBR, NR, Silicone(VMQ), Neoprene(CR), HNBR, XNBR, FKM, FFKM, FVMQ, FLAS, PTFE, PU, ECO, IIR, ACR, etc... All brands for Silicone (Silicone, High strength silicone, high transparent silicone, high/low temperature resistant silicone etc.) |
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Certificate |
IATF 16949:2016 / ISO 9001:2015 / ISO 45001:2018 / ISO 14001:2015 /REACH /ROHS /MSDS/LFGB/F D A |
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Drawing Format |
.stp / .step / .igs /.stl /.dwg / .pdf |
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Parameters |
Inch, centimeter, millimeter, etc. |
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Surface Treatment |
Matte, Common polishing, Mirror polishing, Texture, Laser Engraving, Power Coating (Painting), Printing, Segmented colors, Mixed colors, etc. |
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Mold Material |
No. 50 steel, No. 45 steel, P20, 8407, H13, 718H, etc. |
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Mold Life-cycle |
100,000-500,000 shots. |
Key performance features: Balancing "strength" and "functionality"
The core advantage of the enhanced diaphragm lies in the "mechanical improvement brought by the reinforcing layer" superimposed on the performance of the basic diaphragm, which is specifically manifested as
Higher mechanical strength: Tensile strength and tear strength are 30%-100% higher than those of ordinary pure rubber diaphragms (depending on the reinforcing material), and can withstand higher working pressure (usually 0.5-50bar, and special models can reach over 100bar).
Superior fatigue resistance: In dynamic reciprocating motion (such as the piston push of a diaphragm pump), the reinforcing layer can disperse stress, preventing the base material from cracking due to repeated flexing, and the service life is 2 to 5 times longer than that of ordinary diaphragms.
Stable dimensional accuracy: The reinforcing layer restricts the thermal expansion and contraction or pressure deformation of the base material. Especially under high-temperature (such as 150-250℃, fluororubber base material) or low-temperature (such as -60 ℃, silicone rubber base material) working conditions, the dimensional stability is significantly improved.
Retain core functionality: The reinforcing layer does not affect the medium resistance of the base material (for example, fluororubber reinforced diaphragms still resist strong acids and strong alkalis), sealing performance (leakage rate can be as low as 10⁻⁹ Pa · m³/s), and meets the medium compatibility requirements of specific industries.
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