SAE 100 R7 / EN 855 thermoplastic hydraulic hose — single and twin line
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Medium-to-high pressure thermoplastic hydraulic hose with a nylon 12 inner tube, synthetic textile reinforcement and a highly flexible nylon cover, under SAE 100 R7 / EN 855. Covers 1/8″ to 1″, with working pressure from 1000 to 3000 psi (68.9 to 206.8 bar) depending on diameter and a 1:4 safety factor across the range. Includes the twin-line variant: two identical hoses bonded in parallel to carry supply and return in a single run, typical of hydraulic machinery with a dual circuit.
IMPORTANT: reference data — may differ from the physical product; verify with an advisor before buying.
SKU VT-142234 (SAE 100 R7/EN 855 hose, single) · twin-line variant SKU VT-142235 · 50 m rolls, 1/8″–1″
1. Technical specifications
Materials by component
| Component | Material | Function |
|---|---|---|
| Inner tube | Nylon 12 | Low-friction smooth surface, resistant to hydraulic oil |
| Reinforcement | Braided synthetic textile | Provides the pressure resistance; it is what sets the thermoplastic R7 apart from an unreinforced suction hose |
| Cover | Highly flexible nylon | Mechanical protection with a tighter bend radius than an equivalent rubber cover |
Dimensional and pressure data (single and twin, same specification)
| Nominal diameter | ID (mm) | OD (mm) | Working pressure | Burst pressure | Min. bend radius (mm) |
|---|---|---|---|---|---|
| 1/8″ | 3.3 | 8.5 | 2500 psi · 172.4 bar | 10000 psi · 689.5 bar | 13 |
| 3/16″ | 4.8 | 10.8 | 3000 psi · 206.8 bar | 12000 psi · 827.4 bar | 20 |
| 1/4″ | 6.4 | 13.0 | 3000 psi · 206.8 bar | 12000 psi · 827.4 bar | 33 |
| 5/16″ | 7.9 | 15.1 | 2500 psi · 172.4 bar | 10000 psi · 689.5 bar | 46 |
| 3/8″ | 9.5 | 17.0 | 2250 psi · 155.1 bar | 9000 psi · 620.5 bar | 51 |
| 1/2″ | 10.7 | 20.7 | 2000 psi · 137.9 bar | 8000 psi · 551.6 bar | 76 |
| 3/4″ | 19.0 | 27.1 | 1250 psi · 86.2 bar | 5000 psi · 344.7 bar | 127 |
| 1″ | 25.4 | 34.0 | 1000 psi · 68.9 bar | 4000 psi · 275.8 bar | 203 |
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-sae-100-r7-en-855.html
The bar values in this table were calculated from psi using the standardized factor 1 bar = 14.5038 psi, instead of copying the bar column from the scanned manufacturer sheet: that sheet's 3/4″ row shows a bar figure visibly inconsistent with its own psi value (833 instead of ~86.2). The source psi figure itself is kept as published.
General specifications
| Product | Medium-to-high pressure thermoplastic hydraulic hose, in single and twin-line construction |
| Material | Nylon 12 inner tube · braided synthetic textile reinforcement · highly flexible nylon cover |
| Presentation | 50 m rolls |
| Dimensional range | 1/8″–1″ (8 diameters), identical in the twin-line variant |
| Applicable standards | SAE J517 (current edition 2020-07) — Hydraulic Hose · EN 855:1996 (as labeled on the manufacturer's catalog; exact current European edition to be confirmed) |
2. Engineering criterion: working-to-burst pressure ratio
What the 1:4 factor means
Across this hose's entire range, the declared burst pressure is exactly 4 times the working pressure (for example, 3/16″: 3000 psi working and 12000 psi burst). That 1:4 design factor is the margin between the pressure the hose withstands in continuous service and the pressure at which the tube-reinforcement-cover assembly would fail in a destructive test; it is not a margin to operate sustained above working pressure, but the cushion against pressure spikes (impulses, water hammer, pump start-up) and against material aging.
When this hose is chosen
The thermoplastic R7/EN 855 is specified when the required working pressure falls within 1000–3000 psi and the advantages rubber-and-wire hose does not offer are valued: lower weight, greater flexibility and a tighter bend radius, good external abrasion resistance from the nylon, and reasonable electrical insulation compared to metal-reinforced hoses. It is common in machinery hydraulic systems where routing is tight, and in paint lines, where the manufacturer's catalog explicitly notes its use. Above 3000 psi or above 1″ diameter, the R7 family does not reach dimensionally: a wire-reinforced hose (R1, R2, R12, R13) is specified instead, depending on the required pressure and diameter.
Why the twin-line variant exists
The twin-line variant does not change material or pressure: it is two identical R7/EN 855 hoses, manufactured and bonded together in parallel along the entire run. Its argument is installation, not pressure: when a hydraulic circuit needs a supply line and a return line following the same route (for example, on a double-acting cylinder), the twin line avoids routing and clamping two loose hoses, reduces the risk of them tangling or chafing against each other, and simplifies marking which is which in the field.
3. Construction and chemical/thermal compatibility
Why thermoplastic instead of rubber
The nylon tube and cover are thermoplastic: they are cold-extruded over the textile reinforcement, giving a thinner, lighter wall than an equivalent rubber hose and a smooth, low-friction outer surface, useful when the hose must slide against guides or reels. The trade-off is the thermal limit: 100 °C is noticeably lower than that of a wire-reinforced rubber hose at the same pressure, so it should not be specified on return lines with elevated operating temperature without checking against that limit.
Fluid compatibility
Suitable for common mineral and synthetic hydraulic oils, compressed air and water in non-aggressive applications, and for the paint lines the manufacturer cites. It is not formulated for concentrated aromatic hydrocarbons, phosphate esters or aggressive chemicals: for those fluids, verify the specific compatibility of nylon 12 with the supplier before quoting, or specify a hose with a different thermoplastic tube (specialty polyamide) or PTFE.
Installation
Respect the minimum bend radius from the section 1 table: below that radius the thermoplastic tube can collapse or fatigue prematurely, unlike rubber, which tolerates an occasional tight bend better. On the twin-line variant, do not twist the assembly about its own axis during installation: the two hoses must stay parallel along the entire run, with neither riding over the other on bends.
4. Frequently asked questions
What is the working pressure of the SAE 100 R7 hose?
It depends on diameter: from 1000 psi (68.9 bar) at 1″ up to 3000 psi (206.8 bar) at 3/16″ and 1/4″, with a constant 1:4 safety factor across the range, per the manufacturer data sheet.
Does the twin-line hose withstand more pressure than the single one?
No. The twin line is two individual R7/EN 855 hoses, with the same working and burst pressure from the section 1 table; the parallel bonding is only to ease installing a supply line and a return line together, not to increase pressure capacity.
Can this hose be used with steam or above 100 °C?
No. The manufacturer's declared service limit is −40 °C to +100 °C; above that the nylon 12 tube and cover lose properties. For higher temperatures, specify a high-temperature rubber hose or a PTFE-tube hose, depending on the fluid.
How does it differ from the R12 or R13?
The R7/EN 855 is thermoplastic with textile reinforcement and reaches up to 3000 psi; the R12 and R13 are rubber with spiral steel wire reinforcement and reach 4000–5000 psi working pressure at larger diameters. R7 is chosen when the required pressure falls within its range and lower weight and greater flexibility are valued; R12/R13 are used when pressure or diameter exceed what R7 covers.
5. Application notes
Feasibility
Specify this hose for 1000 to 3000 psi depending on diameter, in machinery hydraulic circuits and paint lines, when weight and flexibility matter more than thermal resistance. Do not specify it for continuous service above 100 °C or for aggressive fluids without confirming the nylon 12's chemical compatibility with the supplier.
Installation
Respect the minimum bend radius per diameter from the specifications table; below that radius the thermoplastic tube can collapse. On the twin-line variant, keep both hoses parallel along the entire run, with no crossovers or twisting of the assembly.
Design
The 1:4 factor is a design margin against pressure spikes, not a license to operate above the tabulated working pressure. For design temperatures above 100 °C or pressure above 3000 psi, specify a different hose family. Final selection of diameter, pressure and chemical compatibility is the responsibility of the hydraulic system designer.
6. 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 J517_202007 (edición vigente, julio 2020) — Hydraulic Hose, SAE International (rotulado SAE 100 R7 y factor de referencia de la familia R)
- EN 855:1996 — Plastics hoses and hose assemblies — Thermoplastics, textile reinforced, hydraulic type — Specification (adoptada como BS EN 855:1997; edición europea vigente exacta por confirmar)
- Ficha técnica de fabricante (archivo interno TECTUL) — Manguera SAE 100 R7 / EN 855, simple y gemela: tabla dimensional, W/P, B/P, radio de curvado y características adicionales
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-sae-100-r7-en-855.