Skip to main content
CROSS-SECTIONCURRENT · v1.0.0DIAG-MEDIA-CROSS-SECTION

Filter Element Media Cross-Section

Illustrates the layered construction of a modern multi-layer filter element and how particle capture efficiency arises from depth filtration. The progressive-density gradient from outer coarse layers to inner fine media layers maximises dirt-holding capacity while maintaining the rated Beta ratio efficiency.

Filter Element Media Cross-SectionCross-sectional view through a cylindrical filter element from outside to center. Outer wrap (protective), pre-filter coarse layer, main synthetic/glass-fiber media depth zone (progressive-density gradient), anti-collapse scrim, and perforated steel center tube. Particle capture is progressive: large particles at outer layer, medium at mid-depth, fine at inner zones. Beta ratio formula shown.OUTER WRAPPRE-FILTER(COARSE)FILTRATION MEDIA (DEPTH ZONE)progressive-density gradient · ISO 16889ANTI-COLLAPSE SCRIMCENTER TUBE(perforated)CONTAMINATEDFLOWCLEANFLOWβ_x(c) = N_up / N_downefficiency E = (1 − 1/β) × 100 %ISO 16889:2022 §3.1.2CAPTURE DEPTH BY PARTICLE SIZE:Large (>10 µm) → pre-filterMed (2–10 µm) → mid-mediaFine (<2 µm) → inner zoneISO 16889 · ISO 11171
Cross-sectional view through a cylindrical filter element from outside to center. Left edge: protective outer wrap. Next layer: coarse pre-filter zone showing large particle symbols trapped near the surface. Main zone (widest): synthetic or glass-fiber filtration media with progressive density gradient — large particles captured near outer edge, medium particles at mid-depth, fine particles near the center. Anti-collapse inner scrim. Right edge: perforated steel center tube providing structural support. Arrows show contaminated flow entering from left, clean filtered flow exiting right. Formula box: Beta ratio β = N_upstream ÷ N_downstream per ISO 16889.

GOVERNING STANDARDS

ISO 16889
ISO 11171

ELIMFILTERS TECHNOLOGIES

NANOFORCE™
SYNTRAX™
SYNTAPORE™

APPLICABLE SYSTEMS

Hydraulic Protection
Lubrication Protection
Fuel Cleanliness Protection

REVISION METADATA

Versionv1.0.0
Statuscurrent
Last Reviewed2026-07-08
Next Review2027-07-08

RELATED ENGINEERING ARTICLES

→Filter Media Science
→Filter Media Engineering
→Fluid Cleanliness
→Testing And Validation
→Dust Holding Capacity