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BFM® Breathable Connectors

BFM^® fitting's breathable connector range is ideal for processes that require airflow, but containment of product dust. They are also ideal for low temperature (LM3) or high temperature (LM4 & Teflex) use. Teflex is also particularly suited to use with more extreme chemicals.

The chart below is a basic summary of our key breathable connector range - for more detail, click on an image below to go to the specific product page. For information on our 'Non-Breathable Connector' range, click here.

	LM3	LM4	Teflex	FM1 Breather

Material	100% woven polypropylene	100% woven polyester	100% woven Teflon PTFE	100% polyester multi-filament scrim supported needle felt
Weight (± 10%)	295g/m² / 8.7oz/yd²	393g/m² / 11.6oz/yd²	678g/m² / 20oz/yd²	550g/m² / 16.22oz/yd²
Temperature Range:
Continuous	-70 - 94°C / -94 - 201°F	130°C / 266°F	260°C / 500°F	130°C / 266°F
Surge	107°C / 225°F	150°C / 302°F	280°C / 536°F	150°C / 302°F
Surface Resistivity (Ohms)	10⁸	10⁹	Insulative	10⁸
FDA Approved	CFR 21 177.1680 & 177.2600	CFR 21 177.2800	CFR 21 177.1550	CFR 21 177.2800
EU Approved	EC 1935/2004 & 10/2011	EC 1935/2004 & 10/2011	-	-
ATEX Certified	-	Approved for all dust explosion hazardous areas. Some restrictions pply.	-	-
Air Permeability ^{(NB: 125Pa = 0.5” water gauge)}	13 (cm³/cm²/sec@125Pa) 25 (ft³/ft²/min@0.5”wg)	0.4 (cm³/cm²/sec@125Pa) 0.8 (ft³/ft2/min@0.5” wg)	0.3 (cm³/cm²/sec@125Pa) 0.5 (ft³/ft²/min@0.5” wg)	17 (cm³/cm²/sec@125Pa) 33 (ft³/ft²/min@0.5” wg)