Replacement for Separation Technologies ST7991 Hydraulic Filter Element
$113.20 Free Shipping to the 48 contiguous U.S. states.
Direct replacement for Separation Technologies ST7991 hydraulic filter in form, fit, and function. Made in America with ISO 9001:2015 Certified manufacturing for assured quality. Optimized filter media is used for fine filtration, long life, and high dirt-holding capacity.
- 4.96″ OD x 3.62″ ID Top x 18.89″ Length overall
- 20 Micron; B20 = 200, B26.6 = 1000 per ISO 16889
- 145 PSID Collapse
- Replaces Separation Technologies ST7991 hydraulic filter in form, fit, and function. Scroll down for additional specs
Part numbers and names are used for cross reference only. Part numbers indicated as replacements are not manufactured or affiliated with the OEM or Brand listed.
Inside-to-Outside flow, Microglass
20 Micron; B20 = 200, B26.6 = 1000
|Max Operating Pressure|
145 PSID Collapse
248 Degress F
SONA Separation Technologies ST7991 Replacement Filter
Our Separation Technologies ST7991 replacement hydraulic filter is a guaranteed direct replacement in form, fit, and function. This means the filter will fit and you should expect performance to be equal to or greater than the OEM filter. Made in America.
Filtration Media for the Separation Technologies ST7991 direct interchange
Our filter media is backed by ISO 16889 multi-pass testing and other ISO/SAE test protocols and the filter is produced in an ISO Certified manufacturing facility. An ISO Certified manufacturing facility is all about quality control, consistency, responsibility, and being true to the design. Optimized microglass media is used for fine filtration, just like the Separation Technologies ST7991 hydraulic filter to be replaced. Our microglass filters use the optimal amount of media and pleats to ensure high dirt-holding capacity. The correct number and design of pleats in the element will give you the lowest initial pressure drop. Therefore the filter will take longer to reach its change-out pressure drop which is usually 25 PSID.
Micron Rating for the Separation Technologies ST7991 cross
This Separation Technologies ST7991 hydraulic filter replacement element is beta-rated. The filter performance is outstanding. The Beta X = 1000 number means that for every 1000 particles of x size in the fluid only one particle will pass through the filter on average.
- 20 Micron; B20 = 200, B26.6 = 1000 equivalent to efficiency of 99.9%
Filter Collapse Pressure for the Separation Technologies ST7991 cross reference
A filter collapse pressure of 145 PSID Collapse means that if the filter is completely clogged and the build up of pressure reaches or surpasses 145 PSID Collapse the filter may collapse and allow contamination downstream. Please use a satisfactory safety factor for the filter.
This filter is compatible with the following fluids but pressure drop will vary depending on viscosity and temperature:
- Hydraulic Fluid and Machining Fluids
- Diesel and other fuels
- Lubricating Oils and Synthetic Lubricants
- Turbine and Compressor Lube Oils … And many more fluids
Visit the links below for more helpful information.
Our hydraulic filter is indicated as a replacement for Separation Technologies ST7991 and is not manufactured by or affiliated with the OEM or Brand listed. Part numbers and names are used for cross reference only. The element may vary from the image displayed on the left.