CIIR+EPDM Outside Braided Hose

BESTYIELD Technology (Huizhou) Co., Ltd. is one of the leading manufacturers and suppliers of ciir+epdm outside braided hose in China, also supports customized service. Welcome to wholesale bulk ciir+epdm outside braided hose in stock here and get pricelist from our factory. For price consultation, contact us.

• Tube: Black CIIR+EPDM
• Inside braid: Polyester fiber, Aramid fiber, Copper-plated steel wire
• Cover: CIIR+EPDM, smooth finish
• Color: Black or multiple colors
• Outside braid: Polyester or stainless steel
• Temperature range: -40°C to +150°C
• Compliance standards: RoHS, REACH
• Flame resistance rating: HB, V1, V2, V0, VW-1, EN45545
• Low extractables materials: Minimizes fluid contamination and permeation, ensures fluid purity
• Product service life: Exceeding 10 years
• Application: coolants like PG25 and deionized glycol mixes, air, phosphate ester

It features a unique CIIR+EPDM rubber compound formula. The ultralow gas permeability of chlorinated butyl rubber (CIIR) combined with the excellent thermal aging resistance of ethylenepropylenediene monomer rubber (EPDM) greatly reduces medium vapor loss of the hose during operation and significantly extends its service life. Boasting outstanding UV resistance, ozone resistance and weatherability, the hose maintains stable performance even under longterm outdoor service. The inner layer of the hose is reinforced with polyester or aramid fibers, while the outer layer is braided with polyester yarn or stainless steel wire, achieving a working pressure of over 2.0 MPa.

Data centers, personal PCs, automobiles, projectors, new energy vehicles, charging piles, etc.

• Remarks: Inner and outer diameter sizes are customizable.

When CIIR+EPDM's inherent chemical resistance meets the mechanical protection of an external braided sheath, the result is a hose system specifically engineered for the most aggressive service environments - chemical processing plants, semiconductor fabrication facilities, and outdoor industrial installations where both chemical exposure and mechanical damage risks coexist.

The four-layer construction provides redundant protection:

• Layer 1 (CIIR+EPDM inner tube): Primary chemical barrier with the lowest permeation rate in our product family. Resists glycol-based coolants, phosphate ester hydraulic fluids, dilute acids, and alkalis.
• Layer 2 (Internal fiber braid): Pressure containment. Fully isolated from the external environment by the CIIR+EPDM cover, preventing chemical attack on the reinforcement fibers.
• Layer 3 (CIIR+EPDM cover): Primary chemical barrier with the lowest permeation rate in our product family. Resists glycol-based coolants, phosphate ester hydraulic fluids, dilute acids, and alkalis.
• Layer 4 (External braid): Mechanical shield. The stainless steel wire variant provides an additional chemical-resistant barrier in environments with airborne corrosive agents (HCl, Cl₂, SO₂ mist) that could degrade the rubber cover over time.

In chemical processing and semiconductor facilities, airborne corrosive agents pose a unique challenge for hose systems. While the CIIR+EPDM cover provides excellent resistance to dilute chemicals, prolonged exposure to concentrated acid mist or chlorine-containing atmospheres can eventually degrade the rubber surface. The stainless steel wire outer braid serves as a sacrificial corrosion barrier:

• 304 stainless steel: Resists atmospheric corrosion in environments with up to 200 ppm chloride content. Suitable for general chemical plant areas and outdoor installations in coastal regions.
• 316 stainless steel: Molybdenum addition provides pitting corrosion resistance in environments with >200 ppm chloride or exposure to sulfuric acid mist. Specified for semiconductor clean room supply lines and marine/offshore chemical handling.

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