Oct . 12, 2025 11:20 Back to list

SAE J2064 Type C A/C Hose – Low Permeation, OEM-Grade

What buyers really ask about: sae j2064 type c vs modern Type E AC hoses

If you’ve sourced automotive AC hoses for any length of time, you’ve seen the spec sheets blur together. But this year, procurement teams keep pinging me about sae j2064 type c and whether a Type E hose is a better move for R-1234yf fleets. Short answer: yes, in many cases. And one interesting product making the rounds is the E Type Factory Air Conditioning Hose (origin: Ningjin County, Hebei Province). It’s built for a constant 3.5 MPa working pressure and tested to SAE J2064 Type E performance. Let’s unpack what matters in real installs.

Industry trend: From sae j2064 type c to ultra-low permeation Type E

Type C barrier hose has been a workhorse for R-134a. But with R‑1234yf adoption and stricter emissions targets, Type E’s lower permeation and better thermal aging are becoming the default for new platforms. Several Tier-1s told me field returns dropped after switching to Type E in hot-climate fleets—less top-off, fewer callbacks. To be honest, that’s what operators care about.

Materials and manufacturing flow (how it’s actually made)

Inner liner: PA (nylon) barrier layer to minimize refrigerant permeation.
Tube/adhesion layers: NBR/EPDM blends for chemical resistance.
Reinforcement: high-tenacity PET/PA textile braid for pressure control.
Cover: ozone- and oil-resistant EPDM/CR, black, smooth finish.
Process: precision extrusion → braiding → co-extrusion cover → vulcanization → cut/mark → cleanliness control.
Testing: pressure proof, burst, helium leak, permeation, thermal shock, impulse cycles, ozone and bend fatigue.

Product snapshot: E Type Factory Air Conditioning Hose

Working pressure	3.5 MPa (constant across sizes)
Burst pressure	≥ 4× WP (≈ 14 MPa), real-world use may vary
Temperature range	-40°C to +125°C (peaks to +135°C for short durations)
Refrigerants	R‑134a, R‑1234yf, compatible oils (PAG/POE)
Permeation	Meets SAE J2064 Type E limits (tighter than sae j2064 type c)
Sizes	Common IDs 6–16 mm; custom cuts available
Service life	Designed for 10–15 years in typical automotive duty

Certifications buyers look for: IATF 16949 for automotive quality systems, ISO 14001 for environmental management, plus RoHS/REACH material declarations. Ask for the latest lot-level test report—seriously, it’s worth the email.

Where it’s used

Passenger vehicles and light trucks switching from sae j2064 type c to Type E for R‑1234yf.
Bus and coach HVAC loops; off-highway and construction equipment.
Refrigerated vans and EV thermal management loops (battery chiller circuits).

Vendor snapshot and buying notes

Vendor	Spec focus	Certs	Lead time	Customization
Ningjin-based OEM (E Type)	3.5 MPa constant; Type E permeation	IATF 16949, ISO 14001 (ask to verify)	≈ 2–4 weeks	Cut-to-length, branding, fittings
Global Tier-1	Premium Type E, OE programs	IATF 16949, OEM approvals	6–10 weeks	Full assemblies, PPAP Level 3
Regional assembler	Type C or E depending on stock	Varies; request documents	1–2 weeks	Quick-turn crimped sets

Field notes and a quick case

A South China bus operator told me they replaced aging sae j2064 type c lines with this Type E hose during mid-life overhauls. After 14 months, their top-off intervals stretched from quarterly to “we barely track it now.” Not a lab result, sure, but the maintenance logs back it up.

Testing standards to tick off

SAE J2064: permeability, burst, whip, vibration, impulse.
Cleanliness ISO 16232 (for assemblies), helium leak screening.
Ozone/UV exposure, salt spray on fittings (ASTM B117), and bend radius checks.

Bottom line: if your spec sheet still says sae j2064 type c, it’s worth qualifying a Type E hose—especially for R‑1234yf and any fleet where top-off costs sting.

Authoritative references

SAE International — J2064: R-134a/R‑1234yf Refrigerant Automotive Air-Conditioning Hose Requirements.
IATF 16949:2016 — Automotive Quality Management Systems.
U.S. EPA SNAP Program and Section 609 MVAC guidance on refrigerants.
ISO 14001: Environmental Management Systems for manufacturing sites.

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