About Porex PM21M

Brand: PorexCorporation
Product Code: 150817

Porex is amicro-expanded PTFE product that allows gasses to permeate but has a highbarrier for liquid water. Porex can be used in instances where gas permeationis desired, but liquid is not. This material is perfect for vents, gas/liquidseparation membranes, etc. It is not a Proton Exchange Membrane (PEM) materiallike Nafion and is a non-conductive insulator.

The evolution of thebattery to more energy-dense, rapid-charging systems has brought new uses forporous materials such as membranes, separators, catalytic support, and fuelcell membranes. Battery systems can still expand with heat and contract duringnormal use, so numerous venting configurations are offered to equalize batterypressure and to allow heat flow. Advanced electrode materials, diffusionbarriers, and electrolyte carriers are also available to optimize performancein a variety of battery and fuel cell configurations.

Porex Microporous PTFE Breathable MembranesOffer:

 High water intrusion pressure resistance

High temperature use

High tensile strength

IP 65, 66, 67 & 68 ratings

UL-94 V-0 rating @ 0.1 mm, 5VA rated @ 0.75 mm

UL 746C rated

 

Superior Microporous Design

Porex PM21M utilizes advanced microporous technology in high-density polyethylene, resulting in consistently controlled pore structure (21 micron nominal) and high porosity. These characteristics enable reliable filtration, venting, and wicking actions-vital for industries requiring precise fluid control. Its controlled permeability optimizes both air and fluid passage, making it suitable for a spectrum of technical applications.


Durability and Safety Assured

Engineered to endure, Porex PM21M maintains mechanical integrity under stress, featuring a tensile strength of 4-6 MPa and a Shore D hardness of 45-60. Its ability to operate at temperatures up to 80C and negligible water absorption ensures sustainable performance in moisture-prone and chemically challenging environments.


Versatile Applications Across Industries

Porex PM21M is widely adopted for filtration, venting, wicking, and fluid management in sectors ranging from medical devices to aerospace. Its white sheet form facilitates easy customization and integration into end products. Distribution, manufacturing, and supplier networks across the United States make sourcing convenient for various businesses and research sectors.