Summit Industrial Products

RHB Series

RHB Series

The RHB Series is a synthetic refrigeration oil formulated from an AB-Alkylbenzene synthetic blend and designed to function under the stringent requirements of CFCs-Chlorofluorocarbon, HCFCs- Hydrochlorofluorocarbon refrigerants like R11, R12, R13, R22, R113, R114, R123, R124 R401a, R401b, R402a, R402b, R403b, R406a, R408a, R409a, R500, R502, R503; & R717 (NH3 aka ammonia) DX and liquid overfeed industrial refrigeration systems. Besides its inherent inertness, improved system efficiency and higher productivity, the performance advantages of the RHB Series versus naphthenic oils include: (1) Partial miscibility and solubility with CFCs, HCFCs and ammonia for improved oil return to the compressor; (2) Superior system cleanliness and lubricity to reduce component wear and corrosion; (3) Superior chemical and thermal stability; (4) Lower foaming tendency; and (5) Extended oil drain capability.

Recommended uses

RHB Series is well-suited for both rotary screw and reciprocating compressors in ammonia service. It is guaranteed to function with evaporators operating down to –40˚C. RHB Series is compatible with all types of seals and O-rings used in ammonia compressors including Neoprene (chloroprene), Buna-N and NBR. RHB Series is also 100% compatible with naphthenic and paraffinic mineral oils, as well as PAO and AB synthetic oils, which allows top-off over these other oils and eliminates the need for system flushes and excessive evaporator maintenance. As with all specialty lubricants, indoor storage and immediate closing of original containers after use is strongly recommended to avoid particulate and moisture.


ISO 9001

Summit first received its ISO 9001 certification in January of 1996, demonstrating a commitment to quality assurance and performance monitoring. ISO 9001 certification is an international quality standard that addresses a comprehensive list of business elements, including management responsibility, order processing, purchasing, process control, traceability, handling of non-conforming product, and internal auditing. Our present ISO 9001 certification is proof of our continuing quality commitment to our customers.


ISO 14001

Summit is committed to protecting the environment, the health and safety of our employees, customers and communities where we work and live. We recognize that through integrating sound environmental health, and safety management practices into all aspects of our business ... we can offer innovative products and services while conserving and enhancing resources for future generations.


NSF ISO 21469

ISO 21469 specifies hygiene requirements for the formulation, manufacture, use and handling of lubricants, which may come into contact with products during manufacturing or processing. The international standard applies to lubricants intended for use in food production, as well as cosmetic, pharmaceutical and animal feed industries. NSF ISO 21469 Certification by an independent, third party provides Summit with a means to obtain international acceptance for their products. 

You can see a list of Summit’s ISO 21469 certified products by clicking here.



A product that is NSF H1 Registered is approved for use where there might be incidental food contact. The categorization of “lubricant for incidental food contact” represents the use of a lubricant which, as a consequence of general use of the machinery or equipment to which it is applied, may result in the contact of that substance with food. All of Summit’s Food Grade products are H1 Registered. 

Certified Products

RHB-32, RHB-46, RHB-68