Types Of Refrigerants

ComStar Expands Production of Metal Lock Black, its Revolutionary “No Heat ...

ComStar Expands Production of Metal Lock Black, its Revolutionary “No Heat” Solder for All Metal Types

ComStar, a producer of environmentally safe chemical products for the HVACR, plumbing, Indoor Air Quality, Food Process and Public Area Cleaning industries, will expand production and distribution of its revolutionary “no heat” solder for pipes and fittings of all types of metals, Metal Lock Black. Metal Lock Black can be used on pipes and connections made of aluminum, black iron, steel, copper, brass and more, unthreaded or threaded. It’s easy to apply, fast to test pressure and permanent. Metal Lock Black is strongly recommended when making repairs to refrigerators and air conditioning systems using a hydrocarbon refrigerant.

College Point, NY (PRWEB) April 21, 2011

ComStar International Inc., a leader in the development and marketing of environmentally safe, industrial strength, chemical products for the HVACR, plumbing, Indoor Air Quality, Food Process and Public Area Cleaning industries will expand production and distribution of its revolutionary “no heat” polymer solder for pipes and fittings for all metal types, Metal Lock Black. It’s easy to apply, fast to test pressure and permanent. Metal Lock Black is strongly recommended when making repairs to systems using hydrocarbon refrigerants.    

Building on the success of ComStar’s Copper Lock, a no heat solder for copper/brass pipe and fittings, Metal Lock Black can be used on aluminum, black iron, steel, copper, brass and more, on unthreaded or threaded pipes and fittings. Technicians need only to sand the unthreaded areas to be joined, apply a small amount of Metal Lock Black to the fitting and pipe, insert, and, if possible, turn the pipe 180 degrees or more. Pipes are ready for handling in just 30 seconds, and, depending on system operating values, ready for pressure-testing after two minutes. For threaded fittings simply apply Metal Lock Black as you would a normal thread sealant.

Metal Lock Black will set up a permanent leak-proof bond in seconds. It seals against most fluids, refrigerants, gases and chemicals and will withstand extreme vibration. Metal Lock Black has a temperature range of –65 to +350 degrees F (-54 to 177 Celsius) and can withstand shear pressure up to 2,200 psi (ISO 10123). It is non-toxic and meets several US military specifications.

Steven P. Mella, ComStar’s CEO, said, “With worldwide use of hydrocarbon refrigerants in home appliances and soon-to-be-introduced air conditioning systems, the industry needs a safe, fast and easy-to-use no heat solder for trade professionals servicing these systems. In addition, today’s air conditioning systems have joined aluminum coils and copper tubing that will require a no heat solder solution when repairing and joining these mis-matched metals. It is for this reason that we have expanded our Metal Lock Black production and have made it available through our ComStar network of companies and affiliates in the U.S., Japan, China and Europe. ComStar is very proud to have Metal Lock Black in our family of over 300 individual chemical products used by service and maintenance professionals across many industry lines worldwide.

Rubber Material Types for Rubber Seals, Rubber Gaskets and O rings

Resistant to the same fluid types as EPDM, the distinctive properties of IIR rubber materials are very low gas and moisture permeability, excellent insulating properties, good ozone and weathering resistance, and resistance to a great many organic and inorganic media. IIR elastomer materials can be polymerised with various halogens (e.g. Chlorine / Bromine) to improve resistance to certain chemical media, but at the expense of electrical insulation and moisture resistance. They can be used from -40 to +120°C typically, and are mostly used in the production of tyre inner tubes, seals and gaskets, vacuum seals and membranes, and pharmaceutical goods. Chlorobutadiene rubbers contain chlorine in the polymer to reduce the reactivity to many oxidising agents, as well as to oil and flame. CR elastomers also have good resistance to ozone cracking, heat ageing and chemical attack. Some of the important applications of CR elastomers include Vee-belts, coated fabrics, cable jackets, tyre-sidewalls, seals and gaskets in contact with refrigerants, mild chemicals and atmospheric ozone. CSM grades contain 24-43% chlorine content to provide excellent ozone and weather resistance, discoloration by sun and ultraviolet light, high resistance to many oxidising and corrosive chemicals, good resistance to dry heat to 150°C, low flammability and gas permeability, and also good resistance to hot water (when cured with lead oxide). The low temperature properties are generally limited, depending on the chlorine content of the CSM grade used, and the compression set is not very good. CSM elastomers are generally useful in electrical applications, weather resistant membranes, hoses and acid resistant tank linings. Generally resistance to high temperatures, oils, ozone, and flame with gas resistance comparable to NBR's. The temperature range for continuous use is -40 to +120°C, but are generally unsuitable for rubber to metal bonding (they are corrosive to metals). ECO elastomers are suitable for use in seals, gaskets, diaphragms, cable jackets, belting etc, for a wide range of media. However, they are unsuitable for use with ketones and esters, alcohols, phosphate ester hydraulic fluids, sour gas, water and steam.

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