Air brake hose — SAE J1402 Type A
TECTUL · Dispatch across Colombia · Exports to Central & South America
Hose for automotive air brake systems, under SAE J1402 Type A, with an NBR/SBR inner tube, high-tension polyester textile reinforcement and an NBR/EPDM cover. Covers 1/4″ to 5/8″, in 50 meter rolls, with a 300 psi (20.7 bar) working pressure at every diameter. Service range -25 °C to +75 °C. It is not a power hydraulic hose: it carries compressed air to the brake system, not mechanical working fluid.
IMPORTANT: reference data — may differ from the physical product; verify with an advisor before buying.
VT-142215 · SAE J1402-A air brake hose, sold in 50 m rolls
1. TECHNICAL SPECIFICATIONS
| Nominal | ID mm | OD mm | Reinforcements | W/P psi/bar | Approx. weight kg/m |
|---|---|---|---|---|---|
| 1/4″ | 6.0 | 15.9 | 1 | 300/20.7 | 0.25 |
| 5/16″ | 10.0 | 17.5 | 1 | 300/20.7 | 0.28 |
| 3/8″ | 10.0 | 19.0 | 1 | 300/20.7 | 0.36 |
| 7/16″ | 11.1 | 20.6 | 1 | 300/20.7 | 0.45 |
| 1/2″ | 13.0 | 22.2 | 1 | 300/20.7 | 0.49 |
| 5/8″ | 15.8 | 27.0 | 1 | 300/20.7 | 0.52 |
IMPORTANT
This technical data sheet is a reference guide to the properties of this product type; it is not a quality certificate for the product you are buying. The measurements, dimensions and physical or geometric characteristics of the product supplied may vary by manufacturer, heat and lot, and may even fall outside the cited standards. If any of these figures is critical to your design or build, verify it with one of our advisors against the physical product or the lot's mill certificate, so you can be fully certain of what you are buying. · Original data sheet: tectul.com/en/conduccion-de-fluidos/mangueras/ficha-tecnica-manguera-para-freno-de-aire-sae-j1402-a.html
The manufacturer sheet declares a nominal B/P of 900 psi (calculated equivalent: 62.1 bar) for all diameters; the source's bar column for B/P repeats the value "20", which matches W/P, not B/P — the psi value is declared as it appears in the source, and the bar value is recalculated by unit conversion, not copied from the inconsistent source figure.
| Parameter | Value |
|---|---|
| Inner tube | NBR/SBR |
| Reinforcement | High-tension polyester |
| Cover | NBR/EPDM |
| Service temperature | -25 °C to +75 °C |
| Presentation | 50 m rolls |
2. Why SAE J1402 and not a generic hydraulic hose
A heavy vehicle's air brake system uses compressed air, not hydraulic fluid, as its actuation medium; SAE J1402 is the specific standard for hoses in this service and requires compatibility with the rapid pressurize/depressurize cycles characteristic of braking, plus ozone and weather resistance from constant chassis exposure. Do not substitute this hose with a generic hydraulic hose of similar pressure rating: J1402 certifies material behavior under the repeated fatigue cycling this service demands, which a hydraulic hose has not necessarily been qualified for.
Diameter and color by function
In dual-circuit installations, many shops color-code by function (red for the rear/service circuit, blue for the front/emergency circuit), though this manufacturer sheet does not declare a fixed color; verify the vehicle manufacturer's standard before installing.
3. FREQUENTLY ASKED QUESTIONS
Can I use a generic hydraulic hose instead for the air brake system?
Not recommended: SAE J1402 certifies fatigue resistance under the rapid pressurize/depressurize cycling typical of braking, which a generic hydraulic hose has not necessarily been qualified to withstand.
What is this hose's actual B/P?
900 psi per the manufacturer (calculated equivalent 62.1 bar); the original manufacturer sheet's bar column has a transcription inconsistency, corrected here by unit conversion.
What diameter is most common in air brakes?
3/8″ is common on main service lines; verify the specific diameter against the vehicle manual.
4. Application notes
Feasibility
Do not substitute a generic hydraulic hose; use only SAE J1402-certified construction for air brakes.
Installation
Verify the color/function code against the vehicle manual before connecting each circuit.
Design
Confirm the 900 psi B/P directly with the manufacturer if the project requires exact documentary verification, given the unit inconsistency found in the source.
5. Technical notice and limitation of liability
The pressures, dimensions, weights and other characteristics in this sheet are theoretical calculation values obtained from nominal properties published in the standards cited (ASME B36.10-2022, ASME B31.3-2024, ASTM A106/A106M-19a, ASTM A53/A53M-24, API Spec 5L 46th ed.). They guide selection; they are not a certificate of conformity for any given lot.
The actual behavior of each lot varies with manufacturing — wall tolerance (up to −12.5%), out-of-roundness, residual stresses — and with the raw material — chemical composition within the ranges the standard allows, heat-to-heat differences. To certify a lot, the tests defined by its product standard are required: tensile test, flattening test and hydrostatic test, documented in the manufacturer's mill test certificate (MTC), which TECTUL supplies upon request; testing of the lot in an independent laboratory can also be arranged.
These values must not be used as the sole criterion in critical or safety applications, or wherever failure of the line may compromise people, property or the environment: in such cases the design belongs to the project's responsible engineer under the applicable code (ASME B31.3, B31.1 or the one governing the installation), with the design temperature, corrosion allowance and load cases of the actual service. Before deciding with these data, consult our technical team.
Sources
- SAE J1402 (Air Brake Hose)
- Ficha de fabricante «Manguera Freno Aire SAE J1402-A» (archivo interno)
This data sheet is the property of TECTUL, part of the Industrias IMR group. Reproduction without attribution is prohibited. Original document and updates: tectul.com/en/conduccion-de-fluidos/mangueras/ficha-tecnica-manguera-para-freno-de-aire-sae-j1402-a.