Qishanr QSL-68H is a polyol ester (POE) synthetic refrigeration oil made by Guangzhou Qishanr Technologies at its own blending plant in Foshan, Guangdong. This is an own-brand product, so the figures are our own published data for the grade. We print them as the reference set for the product and confirm the current data sheet with every quotation. The 40 °C kinematic viscosity we publish for this grade is 66.6 cSt, which places the grade in ISO VG 68 under ISO 3448. We also publish the 100 °C viscosity (9.4 cSt), the viscosity index (120), the pour point (-39 °C), the flash point (270 °C, Cleveland open cup) and the density (0.977 g/ml). The oil is used with HFC refrigerants such as R-134a, R-404A, R-407C and R-410A in refrigeration and air-conditioning compressors that specify a POE lubricant.
The measured viscosity of 66.6 cSt at 40 °C sits inside the ISO 3448 band called ISO VG 68, so the grade is identified by that bandwidth as well as by its own product code.
We manufacture and supply refrigeration and compressor oils at our own plant in Foshan, China, and this grade is available in bulk and in single packs, in our own QISHANR container or in your own branded pack. There is no fixed minimum order — it is confirmed per order, because a single can and a full container load are both workable and the figure moves with the pack size, the quantity and the destination. Delivery is on any Incoterms 2020 term — EXW, FOB, CFR, CIF, DDP and every other rule — and payment is on any commonly used method, including T/T, L/C and PayPal. Send the compressor model, the refrigerant and the oil type on the nameplate and we will confirm what we can supply before quoting.
Qishanr QSL-68H is supplied on published terms: the specification, the price terms, the payment terms and the documents are the same for every buyer, and they can be quoted without a site visit. The minimum order is deliberately left open, because it is judged case by case: the grade, the quantity, the pack size, the shipping terms and the container load all move it, so a single can and a full container load are both workable and neither is treated as the normal case. Send us the quantity, the destination port and whether your own brand goes on the container, and those three turn the table below into a firm quotation. We manufacture refrigeration and compressor oils at our own blending plant in Foshan, Guangdong, and the plant runs at an annual capacity of 6,000 tonnes. Every grade in the QSL range is blended and filled there, which is what lets us confirm a grade, a pack size and a delivery date rather than promise on behalf of a third party. This grade is supplied wholesale and in bulk — to distributors, HVACR service companies, compressor OEMs and private-label buyers — as well as in single packs and sample quantities.
| Item | Terms for Qishanr QSL-68H |
|---|---|
| Minimum order quantity | Not a fixed figure — confirmed per order, because it is judged case by case: the grade, the pack size, the quantity, the shipping terms and the container load all move it, so a single can and a full container load are both workable |
| Payment terms | Any commonly used payment method — T/T, L/C, PayPal and every other option — confirmed with the order |
| Price terms | Any Incoterms 2020 term — EXW, FOB, CFR, CIF, DDP and every other rule — quoted against your destination port |
| Supply ability | 10,000 pieces per year on this grade, at our blending plant in Foshan |
| Origin | Foshan, Guangdong, China (our own manufacture) |
| Supply options | Qishanr QSL-68H as our own QISHANR product, or in your own brand in a private-label container or a custom pack format |
| Who buys this grade | Distributors and resellers who stock refrigeration oil, HVACR and refrigeration service companies, compressor OEMs filling new equipment, and buyers who need private-label packing. Wholesale and bulk orders are the norm; trial and sample quantities are also supplied. |
| Grade confirmation | Send the compressor model, the refrigerant and the oil type on the nameplate. This grade is a polyol ester lubricant for HFC systems with a published viscosity of 66.6 cSt at 40 °C (ISO VG 68), so the match is made on the lubricant family, the viscosity and the refrigerant together. |
| Viscosity | We publish 66.6 cSt at 40 °C, 9.4 cSt at 100 °C and a viscosity index of 120 for this grade. Viscosity is the number that decides whether an oil holds a film at the bearing at running temperature, and the 40 °C figure is the one the ISO 3448 classification is built on. The 100 °C figure and the viscosity index describe how much the oil thins as it heats up, which is what matters when the discharge temperature is high. |
| Pour point and flash point | Pour point -39 °C and flash point 270 °C (Cleveland open cup). The pour point is the low-temperature limit at which the oil still flows, and it is the figure that matters first when a system runs at a low evaporating temperature; the flash point is reported under an open-cup method, and it is not the same number as a closed-cup figure would be. |
| Base fluid | POE (polyol ester) is the synthetic lubricant family used with HFC refrigerants such as R-134a, R-404A, R-407C and R-410A, and it is also used with HFO and CO2 systems on many modern compressors. It is a different chemistry from PVE (polyvinyl ether) and from mineral oil, and it is not freely interchangeable with either in a running system, so a top-up is made with the same lubricant family the compressor was charged with. |
| Documents issued with the order | Technical data sheet, safety data sheet, and a certificate of analysis for the delivered batch |
| Handling and storage | Store sealed, away from direct sunlight, and keep the container closed between top-ups. POE lubricants absorb moisture from the air, so a container should be resealed immediately after use and the oil should not be decanted into an unlined steel drum where it can pick up rust and moisture. A top-up is made with the same lubricant family the compressor was charged with, not with whatever is on the shelf. |
Supply ability is stated for this grade rather than for the plant as a whole. It is not the annual capacity of the blending plant.
We publish this data for the grade itself rather than for a compressor series, so the final word on fitness is the compressor maker’s own charge instruction.
A refrigeration lubricant is chosen for the job it does inside the circuit, not for a single headline number. Our published data for this grade, read together with how a polyol ester oil behaves in an HFC system, points to a specific set of problems the oil is there to solve.
| System need | How Qishanr QSL-68H meets it |
|---|---|
| Lubricity at the bearing | We publish a viscosity of 66.6 cSt at 40 °C (ISO VG 68) and a viscosity index of 120 for this grade, which is what sets the film strength at the bearing under load and the speed of the compressor it is specified for. |
| Miscibility with HFC refrigerant | The oil has to travel with the refrigerant around the circuit and return to the compressor. POE (polyol ester) is the synthetic lubricant family used with HFC refrigerants such as R-134a, R-404A, R-407C and R-410A, and it is also used with HFO and CO2 systems on many modern compressors. It is a different chemistry from PVE (polyvinyl ether) and from mineral oil, and it is not freely interchangeable with either in a running system, so a top-up is made with the same lubricant family the compressor was charged with. |
| Low-temperature flow | The pour point we publish for this grade is -39 °C. That figure is the low-temperature end at which the oil still flows, and it is read first whenever a system runs a low evaporating temperature. |
| Thermal stability | The flash point is published as 270 °C under the Cleveland open cup method, and the 100 °C viscosity (9.4 cSt) shows how far the oil has thinned at running temperature. A POE base is chosen over a mineral oil where the discharge temperature and the refrigerant chemistry demand more stability than a mineral oil gives. |
| Correct family after a service fill | Because POE, PVE and mineral oils are different chemistries, the practical benefit of specifying this exact grade is that a top-up or a re-charge is made with the same lubricant family and the same viscosity band the compressor was built around. |
| Sourcing the right grade | The QSL synthetic range spans ISO VG 22 to ISO VG 170, so a buyer can match the compressor’s requirement across a range from one supplier rather than mixing brands. |
| Private-label and own-brand supply | We are the manufacturer, so this grade can be supplied under your own brand, with the artwork, the pack design and the material selection handled in-house. |
Read as a whole, the data answers the questions that actually come up at a service desk: which lubricant family, which viscosity range, how cold it can run and how stable it is when hot. This is an own-brand product, so the figures are our own published data for the grade. We print them as the reference set for the product and confirm the current data sheet with every quotation.
A refrigeration oil order goes wrong for a small number of predictable reasons, and each step below removes one of them. None of the steps needs a site visit; all of them can be answered from the compressor nameplate and the invoice.
If the nameplate is missing or unreadable, send a photograph of the compressor and the system details and we will work from that.
The table below reproduces the property data we publish for this grade. This is an own-brand product, so the figures are our own published data for the grade. We print them as the reference set for the product and confirm the current data sheet with every quotation.
| Property | Qishanr QSL-68H | Method / note |
|---|---|---|
| Base fluid | Polyol ester (POE) synthetic | Our designation |
| Kinematic viscosity at 40 °C | 66.6 cSt | Our published value |
| Kinematic viscosity at 100 °C | 9.4 cSt | Our published value |
| Viscosity index | 120 | Our published value |
| ISO viscosity grade | ISO VG 68 | ISO 3448 classification |
| Pour point | -39 °C | Our published value |
| Flash point | 270 °C | Cleveland open cup |
| Density | 0.977 g/ml at 20 °C | Our published value |
| Acid value | < 0.05 mg KOH/g | Our published value |
| Refrigerant | HFC — R-134a, R-404A, R-407C, R-410A | Application |
| Compressor types | reciprocating, scroll and screw compressors in refrigeration and air-conditioning service | Application |
The values are our own typical figures for this grade. Where a value is not published for a grade we say so rather than fill the gap.
The grades tabulated here are all polyol ester refrigeration oils from the same QSL synthetic range, and they differ mainly by viscosity. The figures are our own published data for each grade, so the row can be read across without leaving the page.
| Grade | Viscosity at 40 °C | ISO VG | Pour point | Flash point | Viscosity index |
|---|---|---|---|---|---|
| QSL-22H | 18.9 cSt | Between bands | -52 °C | 240 °C | 120 |
| QSL-32H | 33.3 cSt | ISO VG 32 | -50 °C | 235 °C | 130 |
| QSL-46H | 45.3 cSt | ISO VG 46 | -46 °C | 260 °C | 116 |
| QSL-68H | 66.6 cSt | ISO VG 68 | -39 °C | 270 °C | 120 |
| QSL-100H | 96.5 cSt | ISO VG 100 | -28 °C | 260 °C | 103 |
| QSL-170H | 170 cSt | Between bands | -25 °C | 290 °C | 107 |
★ This page is for QSL-68H. The other grades are shown so that the viscosity, the pour point and the viscosity index can be compared directly; each is quoted from our own data for that grade.
The QSL synthetic range covers a spread of viscosities for HFC refrigeration and air-conditioning compressors. The six grades tabulated on this page are the ones we list, from the lightest to the heaviest, and this grade is marked in the right-hand column.
The ISO VG column is the band the published 40 °C viscosity falls in.
Buyers arrive at this page either from the product code on a container or from the compressor they need to fill. This table maps both routes to the same answer.
| Name or reference | What it is | Notes |
|---|---|---|
| QSL-68H | Our product code | The short code this grade is ordered under |
| ISO VG 68 | ISO 3448 reference | The band the published 40 °C viscosity falls in |
| POE | Lubricant family | Polyol ester — a synthetic refrigeration lubricant for HFC systems |
| PAG | Lubricant family | Polyvinyl ether — a different synthetic family, not freely interchangeable with POE in a running system |
| Mineral oil / AB | Lubricant family | The charge used on CFC and HCFC systems, not on an HFC system that specifies a synthetic |
| Qishanr QSL-100H | Other grade in this range | the next heavier grade in the same range |
| Qishanr QSL-46H | Other grade in this range | the lighter grade in the same range |
Every product named here is our own, and the family names are the standard lubricant-family names used across the industry.
We publish 66.6 cSt at 40 °C for this grade, which falls inside the ISO 3448 band called ISO VG 68. That is why the grade is presented with its class number: the number is not a marketing label, it is the band our own measurement lands in.
This is an own-brand product, so the figures are our own published data for the grade. We print them as the reference set for the product and confirm the current data sheet with every quotation.
Viscosity decides the film strength at the bearing and how freely the oil moves at the coldest point in the circuit, and the grades in this range differ from one another by roughly a step in that balance. A compressor that specifies a particular viscosity should be charged with the grade that carries it rather than with the nearest one on the shelf, even though the difference between two drums can look small.
Viscosity is the number that decides whether an oil holds a film at the bearing at running temperature, and the 40 °C figure is the one the ISO 3448 classification is built on. The 100 °C figure and the viscosity index describe how much the oil thins as it heats up, which is what matters when the discharge temperature is high.
POE (polyol ester) is the synthetic lubricant family used with HFC refrigerants such as R-134a, R-404A, R-407C and R-410A, and it is also used with HFO and CO2 systems on many modern compressors. It is a different chemistry from PVE (polyvinyl ether) and from mineral oil, and it is not freely interchangeable with either in a running system, so a top-up is made with the same lubricant family the compressor was charged with.
Where the compressor maker has specified a polyol ester charge, that is the family to keep in the system. Where the nameplate specifies a mineral oil or a PVE oil, the correct product is the one in that family, not this grade.
The QSL synthetic range runs from 18.9 cSt to 170 cSt at 40 °C, which is what lets a compressor requirement be matched across a range rather than accepted as whatever single grade happens to be listed.
The pour point is the number that decides whether a lubricant is usable in a low-temperature application: this grade is published at -39 °C, so a system whose evaporating temperature approaches that figure needs the miscibility and the flow checked before the charge is confirmed.
This is an own-brand product, so the figures on this page are our own published data for the grade rather than a third party’s sheet reproduced under licence. We print them as the reference set for the product and stand behind them as the manufacturer.
We are the manufacturer of this grade, so the data sheet, the batch certificate of analysis and the grade selection advice all come from the same source as the oil. The final word on fitness remains the compressor maker’s own charge instruction, because the compressor, the refrigerant and the duty cycle decide whether a given grade is right for a given unit.
We manufacture refrigeration and compressor oils at our own blending plant in Foshan, Guangdong, and the plant runs at an annual capacity of 6,000 tonnes. Every grade in the QSL range is blended and filled there, which is what lets us confirm a grade, a pack size and a delivery date rather than promise on behalf of a third party.
That means a single order can carry this grade in our own container or in your own brand, in bulk or in single packs, without a trading step in between.
A: We publish 66.6 cSt at 40 °C and 9.4 cSt at 100 °C for this grade, with a viscosity index of 120. The 40 °C value places the grade in ISO VG 68.
A: Both are synthetic refrigeration lubricants used with HFC refrigerants, but POE is polyol ester and PVE is polyvinyl ether. They are different chemistries and are not freely interchangeable in a running system, so a top-up or a re-charge is made with the same lubricant family the compressor was built around.
A: This grade is a polyol ester lubricant for refrigeration and air-conditioning compressors running HFC refrigerants, such as R-134a, R-404A, R-407C and R-410A. If your system uses a different refrigerant, confirm the lubricant family on the compressor nameplate before ordering.
A: We publish a pour point of -39 °C for this grade. It is the low-temperature end at which the oil still flows, and it is the first figure to check when a system runs a low evaporating temperature, because below it the oil can stop moving and stop returning to the compressor.
A: The published flash point is 270 °C, measured by the Cleveland open cup method. Because it is an open-cup figure it should not be compared directly with a closed-cup flash point, which is typically lower for the same oil.
A: No — not as a matter of routine. POE, PVE and mineral oils are different chemistries, and a top-up is made with the same lubricant family the compressor was charged with. If a system has to change family, that is a deliberate conversion with the oil flushed and the compressor maker’s instruction followed, not a top-up.
A: No fixed figure. The minimum is confirmed per order, because it moves with the grade, the quantity, the pack size and the destination. A single can and a full container load are both workable.
A: Yes. We are the manufacturer, so this grade can be supplied under your own brand, with the artwork, the pack design and the material selection handled in-house at our plant in Foshan, China.
A: The technical data sheet and safety data sheet come with the quotation, and a certificate of analysis for the delivered batch comes with the shipment.
A: It is our own product. QISHANR is our own brand, made at our blending plant in Foshan, Guangdong, and supplied directly by us as the manufacturer rather than through a reseller.
A: Price is quoted on any Incoterms 2020 term — EXW, FOB, CFR, CIF, DDP and every other rule — against your destination port. Payment is on any commonly used method, including T/T, L/C and PayPal. Both are confirmed on the order rather than fixed in advance.
A: At our own blending plant in Foshan, Guangdong, China, which runs at an annual capacity of 6,000 tonnes. The grade, the pack and the batch certificate all come from the same plant.
Every figure on this page is our own published property data for this grade. This is the set of sources and what each one establishes.
| Source | What it establishes |
|---|---|
| ISO 3448:1992 — Industrial liquid lubricants — ISO viscosity classification | The band system used to classify the grade. Our published 40 °C viscosity for QSL-68H is 66.6 cSt, which places it in ISO VG 68. |
| Our own equivalent grade — Qishanr QSL-100H | The neighbouring synthetic grade we manufacture at the same plant, for buyers comparing one viscosity against the next in the range. |
| QISHANR refrigeration lubricants — product range | The wider QISHANR refrigeration lubricant range, including the small-pack products and the mineral-oil grades, so a mixed order can be assembled from one plant. |
This is an own-brand product: the figures are our own published data for the grade, quoted as the reference set and confirmed with every quotation.
This oil is manufactured and supplied by Guangzhou Qishanr Technologies Co., Ltd., trading as the brand QISHANR. The company is based in Foshan, Guangdong, adjacent to Guangzhou Port, and has been producing lubricants for more than 10 years from its own blending plant. That plant runs at an annual capacity of 6,000 tonnes, which is what allows us to hold stock on the grades we list and quote firm lead times rather than promising on behalf of a third party.
Refrigeration oils are the core of the business, but they are not the whole plant. The same lines produce general industrial lubricants, so a mixed enquiry that covers both refrigeration oils and ordinary industrial grades can be quoted, packed and shipped together instead of being split across suppliers.
This is not the full range. Specialised ester base oils and lubricant additives are produced in-house as well, which is the reason the synthetic ester grades can be specified to a target rather than bought off a shelf. If the grade you need is not listed above, send the specification or the product you are replacing and we will confirm whether we produce it.
Long-term partners get pricing that reflects a stable manufacturing base rather than a trading margin, and the same technical contact stays with the account from grade selection through to repeat orders.
Send the compressor model, the refrigerant and the oil type on the nameplate, together with the quantity and the destination port. We will confirm the grade, the documents and the terms before quoting, and there is no fixed minimum order to work around.
Request a QuoteOriginal publication. The product data, specifications and compatibility charts published on this page for Qishanr QSL-68H refrigeration oil were originally published by QishanrLubricants on 2026-08-05 at qishanrlubricants.com. © 2026 QishanrLubricants. All rights reserved.
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