Product Overview
The oil filter 250025-526 is a critical component within a compressor, protecting the handpiece and extending the service life of the lubricating oil and the oil-gas separator. The air drawn into the compressor contains a large amount of solid particles. Typically, most solid particles with a diameter of less than 10 μm cannot be filtered out by the air filter and enter the compressor system. After the air is compressed, its volume decreases, and the concentration of solid particles increases accordingly. Lubricating oil can produce partially carbonized solid particles when operating at high temperatures. If these large particles circulate back into the handpiece with the lubricating oil, they can cause wear on the handpiece bearings.
Therefore, these large particles must be filtered out before the lubricating oil re-enters the handpiece. The oil filters designed by our company for air compressors can generally filter out solid particles as small as 25 μm. Upon request, we can customize higher-precision oil filters based on customer needs.
Technical Specifications
Descrition: air compressor oil filter 250025-526
Designed For Use With: Sullair
Outer diameter: 119mm
Total height: 286mm
filter media: filter paper
product weight: 1.72kg
Thread: 1.1/4-11 BSP
Type: spin-on
Key Features & Benefits
1. our filter meets Or Exceeds OEM Specifications
2. competitive price with good quality, so it is Cost Effective Solution To OEM Parts
3. fast delivery. we can deliver within 5-7 days.
4. we can print the brand name as requested.
Exploded view of oil filter

Installation & Replacement Guide
The oil filter should be replaced after the first 500 hours of operation of a new machine. It is recommended to replace the oil filter every 1500-2000 hours. The replacement interval should be shortened when used in harsh environments.
After the oil filter is uninstalled, the mounting base must be cleaned to avoid deformation and tearing of the new gasket due to dust and gasket residue.
Before installation, the gasket of clean oil lubricator can be used, but do not lubricate with grease, which will cause leakage if incompatible with gasket.
Strictly use the oil filter within the time limit, otherwise the filter will be seriously blocked, the pressure difference exceeds the set limit of the bypass valve, the bypass valve will open automatically and a large amount of dirty oil will directly enter the air end, causing serious consequences.
Compatible Air Compressor Models
The filter is used for Sullair compressor LS 16 / LS 20 / LS 25 series
Shipping & Delivery Information

Frequently Asked Questions
What is the oil filter 250025-526 used for?
The oil filter 250025-526 is designed for Sullair air compressors. It removes solid particles from lubricating oil, protecting compressor components and extending service life.
Is oil filter 250025-526 an OEM part?
Yes, our oil filter 250025-526 meets or exceeds OEM specifications. It is a reliable, cost-effective replacement compatible with Sullair compressors.
How often should I replace the oil filter 250025-526?
It is recommended to replace the oil filter after the first 500 hours of operation, and then every 1500–2000 hours, or sooner in harsh environments.
What are the dimensions of oil filter 250025-526?
This oil filter has an outer diameter of 119mm, a total height of 286mm, and a thread size of 1.1/4-11 BSP.
Can I get custom branding on the oil filter 250025-526?
Yes, we can print your requested brand name on the filter, making it suitable for distributors and resellers.
How quickly can oil filter 250025-526 be delivered?
We provide fast delivery within 5–7 days, ensuring minimal downtime for your air compressor system.