IIR+EPDM Outside Braided Hose

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

 

• Tube: Black IIR+EPDM, halogen free
• Inside braid: Polyester fiber, Aramid fiber, Copper-plated steel wire
• Cover: IIR+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, HF
• 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

 

Optimizing a unique IIR+EPDM compound formula, it combines the ultra-low gas permeability of butyl rubber (IIR) with the excellent weather resistance and aging resistance of EPDM rubber. This greatly reduces the permeation rate of the hose during service and significantly extends its service life, making it suitable for a variety of severe working conditions. With outstanding ozone resistance and UV resistance, it maintains stable performance even under long-term outdoor exposure or high-frequency vibration environments. It requires no frequent replacement and effectively reduces users' maintenance costs. 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.

 

Part Number	Hose I.D.		Hose O.D.		Working Pressure		Burst Pressure		MIN. Bend Radius
	inch	mm	inch	mm	psi	MPa	psi	MPa	inch	mm
103-01	1/8	3.2	0.31	7.9	290	2.0	870	6.0	5/8	16
103-02	3/16	4.8	0.37	9.5					3/4	19
103-03	1/4	6.3	0.50	12.7					1	25
103-04	5/16	8.0	0.55	14.0					1-3/8	35
103-05	3/8	9.5	0.63	15.9					1-9/16	39
103-06	1/2	12.7	0.79	20.0	261	1.8	783	5.4	2-3/4	70
103-07	5/8	16.0	0.94	24.0					3-1/2	89
103-08	3/4	19.0	1.06	27.0					4-1/2	115
103-09	7/8	22.2	1.26	32.0					5-1/2	140
103-10	1	25.4	1.39	35.4	218	1.5	653	4.5	6-1/2	165
103-11	1-1/4	31.8	1.77	45.0					8-1/2	216
103-12	1-1/2	38.1	2.00	50.8					9-9/16	243
103-13	1-3/4	44.5	2.32	59.0					11-1/8	283
103-14	2	50.8	2.76	70.0					13-1/4	336
103-15	2-1/2	63.5	3.07	78.0					14-3/4	375
103-16	3	76.2	3.54	90.0					17	432
103-17	3-1/2	89.0	4.13	105.0					19-13/16	504
103-18	4	101.6	4.72	120.0					22-11/16	576

 

• Remarks: Inner and outer diameter sizes are customizable.

 

What distinguishes this hose from our 102 series is the external braided sheath - the fourth structural layer that transforms the hose from a pressure-containing component into a fully armored fluid transfer system. The outer braid addresses three primary failure modes:

 

1. Abrasion Resistance

Abrasion testing shows >10,000 cycles before cover compromise vs. <2,000 cycles for smooth-cover hose - translating to 5× longer service life in high-abrasion routing scenarios such as industrial machinery cooling and mobile equipment.

 

2. Rodent Damage Prevention

Stainless steel wire outer braid provides an impenetrable barrier - field reports confirm zero rodent-related failures over 8+ years in rodent-prone data centers. Polyester yarn variant also provides effective deterrence through its tough, fibrous texture.

 

3. Enhanced UV Endurance

Accelerated weathering tests (SAE J2527, 2,500 hours) show braided hose retains >95% original burst pressure vs. 88-92% for smooth-cover. Meaningful service life extension for outdoor installations in high-solar climates.

 

Select polyester yarn for outdoor cable trays with flexibility priority.

Select stainless steel for direct burial, floor crossings, marine/offshore, or rodent-prone environments.

 

The external braid actively contributes to pressure containment by constraining radial expansion, allowing the internal braid to operate at higher efficiency.

 

• Surface preparation: Cured cover cleaned and inspected. Irregularities corrected before braiding for uniform braid seating.
• Braid application: High-speed maypole machine with computer-controlled tension. Polyester: 24-48 carriers, >99% coverage. Steel wire: 16-32 carriers with precision guides.
• Final proof test: Hydrostatic at 3.0× working pressure, verifying all four layers as unified system.

 

• Warranty: 24-month from shipment against manufacturing defects. Replacement shipped within 48 hours.
• Field failure analysis: Complimentary root cause analysis with cross-section microscopy to identify failure origin layer.
• Custom outer braid: OEM colors (polyester), custom tightness, pre-assembled hose sets with factory fittings. Min. 100 assemblies per config.

 

 

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