1502-B1-01 is mainly used as a substitute for DENAIR oil filter element in air compressor pre filters, which can effectively filter impurities such as iron filings, dust, and adhesive substances in the oil. The filtration efficiency reaches 99.9%, and the service life of this filter element is generally 3000-4000 hours. Users should replace the filter element in a timely manner to avoid oil contamination causing air compressor failure.