Aftermarket Mark 640591 Air/Oil Separator

Replacement for Mark 640591 Air/Oil Separator, High Efficiency Borosilicate Glassfiber Media

Replacement for Mark 640591 Air/Oil Separator, High Efficiency Borosilicate Glassfiber Media 640591

Air/Oil Separator Elements

Air/Oil Separators for rotary screw and vane type air compressors provide the ultimate filtration, with a micron rating of 0.3. All particles passing through the air and lube oil filters, which are larger than 0.3 microns, will be trapped by the separator. Separators are constructed of a depth loading media, and have good dirt holding capabilities.

The basic purpose of this product is to separate the oil from the air through coalescing action. The oil is physically trapped by the separator while allowing air to pass through. The oil is then drained down to the sump, removed by the pickup tube and return lines, and returned to the sump to be recompressed in a continuous cycle.

A separator's life will vary considerably from thousands of hours down to very short cycles depending on usage and environmental conditions. (i.e. dust, humidity, smoke, pollution, etc...)

Meets or Exceeds OEM Specifications

Specifically designed to fit your original equipment, our air/oil separators offer equal to or better than performance based on each manufacturer's stringent specifications. Since our suppliers specialize in filtration, they are able to take OEM requirements and combine that knowledge with their filtration experience to build a superior separator.

Our Coalescing Filter Replacements come with a manufacturer's warranty that matches or exceeds the original OEM warranty.

Holds its Shape

An eIndustrialSolutions air/oil separator holds its shape under pressure and will maintain the maximum surface area for improved performance. Its rigid construction helps maintain even pressure differentials keeping the air/oil separator from collapsing and shutting down your compressor.

Better Construction

Because of how it's constructed, you won't find one of our air/oil separators failing prematurely. Built with such features as steel metalwork, nylon end-caps and metal to metal welding, with our air/oil separators your compressor can perform better and last longer.

Original equipment manufacturer (OEM) names are the trademarks of each manufacturer. On products marked "replacement," OEM names and part numbers are for reference only.


ISS is an independent supplier of aftermarket replacement parts and is not affiliated with manufacturers mentioned in this listing. Original equipment manufacturer (OEM) names are the trademarks of each manufacturer. On products marked "equivalent", "replacement", or "aftermarket", OEM names and part numbers are for reference only.

Brand Reference      :      Mark
Product Type      :      Aftermarket/Replacement
Style      :      Cartridge
  • Meets Or Exceeds OEM Specifications
  • Cost Effective Solution To OEM Parts
  • Using Aftermarket Parts Will Not Void Your Warranty
  • OEM Names And Part Numbers Are For Reference Only