Elastomer bags function as protectors: the bag is positioned to separate the well fluid on the outside from the clean motor oil on the inside, while allowing the oil to expand and contract freely as the ESP motor heats up and cools down through its duty cycle.
The 562 series (5.62 in / 143 mm housing OD) is our largest protector format, used with higher-horsepower ESP motors where a greater oil expansion volume must be accommodated. Bags are available in AFLAS, HNBR or FFKM.
The 562 series carries the largest oil-expansion volume in our range. It is the format specified when a high-horsepower motor, a long cable run or a steep thermal cycle would otherwise push the bag beyond its design travel and allow well fluid to reach the motor oil.


Key Features
- Series: 562 (5.62 in / 143 mm housing OD)
- Function: physical separation of well fluid from motor oil
- Compounds: AFLAS, HNBR, FFKM
Typical Applications
- High-horsepower ESP motors in 5.62 in / 143 mm housings
- Deep, hot wells with a large motor-oil expansion volume over the duty cycle
- Long-run installations where the protector must absorb many thermal cycles
- Sour and high-pressure wells requiring AFLAS or FFKM elastomers
- Replacement bags for existing 562 protector chambers
Custom Options & Ordering
- Housing size: 562 series (5.62 in / 143 mm OD)
- Elastomers: AFLAS, HNBR, FFKM
- Bag-only supply or complete protector assembly
- Custom end fittings and chamber counts on request
Request a Quote
Tell us your medium, working temperature, pressure and dimensions and we will recommend the compound and geometry for your duty. Reach our engineering team at sales@aobo.biz or +86-573-87855272, or use our contact page.