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SynCold® DRAH
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- Product Description
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| Product Overview
SynCold® DRAH series products are high‑performance naphthenic mineral refrigeration lubricants specifically developed for commercial and industrial refrigeration and air‑conditioning compressors. Designed for applications using ammonia as the refrigerant, these lubricants contain virtually no wax, resulting in a low pour point and excellent fluidity even at extremely low temperatures. They also help keep evaporator tubes clean, enhancing heat transfer and reducing maintenance downtime. With outstanding chemical stability, they are suitable for cylinder and bearing lubrication.SynCold® DRAH refrigeration lubricant is used for standard factory filling in industrial refrigeration equipment and for OEM retrofit applications. It offers the low-temperature performance advantages characteristic of high-performance naphthenic products, with outstanding capabilities in sludge dissolution and varnish inhibition, and exhibits strong environmental adaptability across both high- and low-temperature refrigeration conditions.
Naphthenic mineral oils, due to limitations imposed by their miscibility with refrigerants, are not recommended for use with HFC refrigerants.
The results of the ammonia‑resistance test for refrigeration lubricants (DIN 51538) indicate that SynCold® DRAH exhibits excellent chemical stability when used with R717 refrigerant and has no adverse effects on metals or other materials such as rubber.
| Applications and Compressor Types
- R717 (ammonia), hydrocarbon refrigerants (such as R290, etc.), R744 (CO2)
- Reciprocating and screw compressors
| Technical Features and Performance Advantages
Features
Advantage
Low wax content Outstanding low-temperature fluidity and enhanced evaporator heat transfer, delivering optimal system efficiency. Good chemical stability Long service life, minimal downtime, and low maintenance costs. Multipurpose lubricant Lubrication suitable for cylinders and bearings can reduce lubricant inventory. A wide range of viscosity options It can meet the viscosity requirements of various devices and applications. Seal Compatibility Long sealing life, reducing shaft seal leakage. Food Safety Grade NSF certification under (H2) | Technical Specifications
Applicable Standard: GB/T 16630-2012
Compliance with standards: German Institute for Standardization (DIN) DIN 51503‑1, Japanese Industrial Standards Committee (JISC) JIS K 2211, British Standards Institution (BS) BS 2626.
| Physical Properties
Product Name DRA32H DRA46H DRA68H Test Method ISO Viscosity Grade 32 46 68 GB/T 3142 Kinematic viscosity (40°C) / (mm²/s) 32.5 46.5 68.5 GB/T 265 Color / Number <0.5 <0.5 <0.5 GB/T 6540 Density (20°C)/(kg/m³) 897 899 896 SH/T 0604 Flash point /°C 175 200 210 GB/T 3536 Pour point /°C -42 -39 -33 SH/T 0886 Acid value / (as KOH) / (mg/g) <0.02 <0.02 <0.02 GB/T 4945 Extreme-pressure performance (Four-ball test) failure load / N 2650 2850 2930 SH/T 0187 Rotating Oxygen Bomb (Induction Period)/(min) >500 >500 >500 ASTM D2272 Ammonia Resistance (120°C, 168 h, Ammonia-Enriched) Color / Shade 0.5 0.5 0.5 NB/SH/T 0937 Bottom note: The SynCold® DRA H series can meet customers’ specific viscosity requirements and accommodate a variety of packaging specifications. Additional information is available upon request.
| Health and SafetyHealth and safety recommendations for this product can be found in the Material Safety Data Sheet (MSDS).
| Packaging Specifications
200L, 20L, 10L, 4L, 1L
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