Sefar filter bags for dust filtration systems are available in two types:
Filter media technology
SEFAR TETEX NF dust filters are made from high-quality needle-felt.
The oil- and water-repellant felts (NFI) are also available in an antistatic version (NFIA).
For low pressure filters, a PET needle-felt of 350 g/m² is used
For high pressure filters and PET filter bags a 500g/m² needle-felt is used