Air Filter

Oil Filter

Separator Air / Oil

Coalescent Elements

Major Manufacturers of Air Compressors in North America Trust KELTEC Technolab.

KELTEC Technolab compressor filters and oil are suitable replacements for all major competitive interchanges. The technical characteristics of KELTEC Technolab products can be found within this site. KELTEC Technolab filters have successfully replaced all other major brands of OEM and replacement filters in tens of thousands of applications.

KELTEC Technolab guarantees that its filters will meet or exceed the specifications and performance of the OEM, and further, that customers replacing OEM filters with KELTEC Technolab filters will experience no filter-related difficulty.


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Nuestra guía de referencia cruzada de filtros ahora se puede filtrar por número OEM, número de KELTEC y número de pieza de suministro de aire.

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We are the largest manufacturer of high performance oil / air separators in North America.


Conventional Wrap Style
The standard conventional oil separator is the original design for the removal of oil aerosols from the compressed air stream. This element design consists of a specific amount of a uniform grade of borosilicate glass fibers, “wrapped” onto a support tube.

When properly sized to the cfm/m3/min flow rate and corresponding operating pressure of the machine, this element will provide consistent performance according to the following data:

Pressure drop (initial)
- 2-3 psi / .20 bar

Pressure resistance
- 70 psi / 5 bar

- 2-3 ppm / 2-3mg/m3 residual oil

Refrigeration separators

KELTEC utilizes special inorganic materials for the construction and proper function of oil separators for refrigeration and natural gas compressor packages. These units have other gases being compressed and mixed with lubricating oil which must be removed prior to use of the gas.

These types of gases, along with ancillary materials often contained in natural gas, are not suitable for typical oil separator construction. KELTEC takes great care in the proper selection of all materials in order to ensure proper functioning of our separators.

KELTEC Technolab has the longest history of successful oil separation technology for this field. From the coalescing materials, to the sealing methods used, you can be confident in our refrigeration and natural gas oil separators.

Air filters

Ultimate in Compressed Air Filtration
The Compressed Air Contamination Issue
Atmospheric air entering the air compressor is the single biggest contributor of contaminants into a compressed air system, that over time, reduce the efficiency and life span of oil filters and air-oil separators. Keltec-Technolab has a wide range of air intake filters, utilizing cellulose, synthetic and fiberglass medias, of varying efficiencies, that will greatly reduce this contaminant and provide for longer system life.

Oil filters

Like all of our products, KELTEC Technolab oil filters are built of the highest quality materials and workmanship.
Specific filtration levels are obtained through the exclusive use of high-grade filter media and consistent surface area control, obtained by a strict maintenance of pleat quantity and depth. Leakages are prevented by the positive seals obtained with both plastisol and epoxy encapsulation. Viton seals are used where applications of synthetic oil are typical

In the compressor system, the oil itself must be filtered on a regular cycle to remove contaminants that may enter the compressor and damage the unit. This is accomplished through the installation of a lube oil filter, either in cartridge, or spin-on form, which then ensures that all of the oil is cleaned as it moves through the filter.

Filtering in 5–25 micron range (depending upon application), it is again, the depositing of oil-borne contaminants over time, that causes the oil filter to continually increase in differential pressure to a point at which it must be replaced in order to continue proper filtration of the compressor oil.

Lube oil

The Correct Compressor Lubricant is Crucial for Operational Success
KELTEC Technolab offers a full range of PAO, diester and polyglycol based compressor lubricant, designed to match the most difficult compressor application. Continual testing and research combines to ensure that the most effective oil additives are used in order to virtually eliminate such common problems such as foaming, oxidation, and deposit formation.

Coalescing filters / Housings

KELTEC Technolab’s coalescing filters provide the highest level of clean, compressed air with a minimum loss of energy.

Our filters provide the highest level of clean, compressed air with a minimum loss of energy (pressure drop) through the selection of the appropriate grade of borosilicate microglass filtration media.

KELTEC Technolab coalescing filters guarantee your air compressor system will operate correctly with minimal operational upkeep.

Once generated by the air compressor, (compressed) air often must be further filtered to meet the exacting needs of the industrial applications for which it is used. This is most effectively done through the use of a downstream coalescing filter, or series of filters. It is a common misconception that “oil-free” air compressors do not require this precaution. However, atmospheric air typically contains a significant amount of water, oil vapor and other contaminants, especially in industrial areas.


Upon compression, these contaminants are concentrated into the compressed air, whether the machine is “oil-free” or oil-flooded. Accordingly, the use of fine, coalescing filters is essential for both types of compressors, which prevents an accumulation of such contaminants in pneumatic machinery.

Compressed Air Dryers

KELTEC Refrigerated Dryers actively remove condensate to achieve extremely dry compressed air.
The importance of compressed air as a provider of energy for the modern industrial process is widely known. What is often overlooked, however, is the need to provide quality treatment for this air.

Air entering the system contains condensate which, when cooled, will turn into liquid water, causing extensive damage, not only to the compressed air network, but also to the finished product.

KELTEC Dryers actively remove condensate to achieve extremely dry compressed air allowing for less system downtime, reduced cost on maintenance and filtering installation, and improved finished product.


The Chicopee separator design utilizes a unique media configuration and innovative structural integrity components to achieve exceptionally efficient oil removal.


KELTEC Technolab offers high quality Activated Aluminum Desiccant for the absorption of water vapor and other gases from compressed air.
KELTEC Technolab Activated Alumina Desiccant is highly porous with a large surface area that will not weaken or break when subjected to high liquid concentrations. Our high crush strength and strong durable shipping bags allow for easy transport.

Water Separators

The unique centrifugal action in our water separators helps KELTEC Technolab protect your equipment investments.
KELTEC-Technolab water separators have been designed for the removal of bulk liquid water and a significant portion of particulate from compressed air and gases. Unique centrifugal action removed contaminants at low-pressure drop for maximum energy savings.

Note: While highly efficient, condensate separators will not remove 100% of the water from the air stream. Additional coalescing and particulate filters downstream are typically required to remove the fine traces of oil, water and particles.

Panel filters

High-efficiency ASHRAE filter for HVAC applications
Hydrophobic glass fiber “mini-pleat” design in “V–bank” configuration for the maximum amount of filter media, providing for superior dust-holding capacity with exceptionally low pressure drop.

Pleat spacing and uniformity is assured with physical division of each individual pleat, assuring equal and smooth airflow through the filter media.

Interchanges for all manufactures
Rugged industrial construction
Galvanized steel frames
Metal straps for ease of removal
Metal support screens-both sides
Huge inventory
Competitive pricing


KELTEC offers a range of purge exhaust mufflers for both air compressors and desiccant air dryers. When old desiccant causes a muffler restriction or becomes contaminated with lubricant, we offer replacement desiccant, mufflers and lubricant. All our mufflers are in stock & competitively priced.

We have a complete line of filters, all-metal mufflers and filters, porous metal filter silencers and breather-vent-filters

About Us | Keltec Technolab

KELTEC Technolab was founded in 1982 by Ed Kaiser, Sr., formerly an engineer of the Air Maze Corporation for over 20 years. With initial production of air-oil separators, KELTEC Technolab eventually added air-intake filters, oil filters, coalescing filters and synthetic compressor lubricants. Through a series of mergers (Technolab in 2002, Chicopee Engineering in 2016 and Air Supply Company in 2019), Keltec has grown to become the largest manufacturer of air-oil separators in North America. In 2011, KELTEC-Technolab partnered with Sr.Luiz Ribeiro and his family, to establish a stocking warehouse of products in Indiatuba/Sao Paulo Brazil for South America customers. Today, KELTEC-Technolab Brazil, is one of the largest wholesalers of compressor filters in this market. 


KELTEC’s diverse range of products are stored and trusted all over the world.


Our filter cross reference guide can now be filtered by OEM number


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Quality Assurance

KELTEC Technolab is committed to the quality of both products and services to all customers.

Under our ISO 9001 certified Quality Management System, we are always striving to provide consistent, quality products as well as quality methods. Our commitment to quality guarantees that KELTEC filters will meet or exceed the specifications and performance of the OEM, and further, that customers replacing OEM filters with KELTEC Technolab filters will experience no filter-related difficulty.

KELTEC Technolab guarantees that the filters in which we produce are free of manufacturing defects in workmanship or materials. If the filters are used as intended by the equipment manufacturer and KELTEC Technolab, with proper service intervals, KELTEC Technolab will guarantee the performance of their filters. Should a product failure be the result of a manufacturing defect of KELTEC Technolab, it will be replaced and returned to the customer in the original condition that existed prior to the use of the subject filter. Such claims must be reported to KELTEC Technolab within 30 days of observation, and KELTEC Technolab reserves the right to inspect and test the filter in question.

Ed Kaiser,

KELTEC Technolab, INC

ISO 9001 Certificate of Approval

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