Particle & Ingress Protection

Particle & Ingress Protection

Seals must prevent the ingress of water and other particulates to provide reliable and long-lasting protection of internal components to prevent failures and reduce maintenance. As consumers expect more resilient products, which are often also lighter, thinner, and more portable, the selection of the right sealing material becomes critical.

Our understanding of gasket design, in-depth technical knowledge of our materials and converting capabilities help designers and manufacturers address their ingress sealing challenges to achieve protection ratings such as IP67.



Our sealing solutions are highly conformable and compressible, whilst also resisting compression over time and maintaining a consistent enclosure force and a more durable seal. PORON® Polyurethanes and BISCO® kSIL silicones exhibit superior physical properties and are available in a broad range of formulations to meet diverse enclosure designs, withstand environmental extremes and meet industry specifications. 

How Foams Protect

PORON® Polyurethanes and BISCO® silicone foams are low outgassing, non-fogging, non-corrosive, and do not contain any plasticisers or chemicals which may contaminate devices. Resistance to compression set and low-stress relaxation ensure long-term reliability of the device.

Meeting Industry Specs

Sealing materials must also meet a range of industry specifications. Our materials meet some of the most stringent specifications in the transport industry such as:

  • FAR specifications in aviation
  • EN45545 HL3 (FST) in rail
  • FMVSS302 (automotive flame resistance)
  • SAE-J1756 (fogging)
  • ULJMST2 (gasketing)
  • AMS 3568 (Corrosion resistance)
  • As well as many other industry specifications


Our kSil V-0 range of silicone in sponge and solid formats also includes sponge and solid extrusion grades in cords, tubes, sections and custom profiles. They have extreme temperature resistance -60C to 230C and are available in a broad range of densities to meet a wide range of sealing applications.

Markets We Serve

Protection of critical components

Particle and Ingress Protection materials

Sealing Materials

Frequently Asked Questions

Most frequent questions and answers

Can you use open cell foams to get a water seal?

MGI: “Yes, a number of our foams are microcellular and are manufactured for these applications, depending on the IP requirements compression of the foam can be from 15% to 40%”

Aren’t closed cell foams better than open cell foams for water sealing?

MGI: Typically, closed cell foams require significant compression to create a seal. Whilst this may work initially, after extensive use the cells will begin to break down and the seal will begin to take a compression set, meaning the seal will not be able to perform as the material will not return to its original thickness. Our range of specialist polyurethane and silicone foams have a significant compression set resistance and are designed for critical and hard-wearing sealing applications. 

See Particle and Ingress Protection In Action

Our library of global innovative materials includes a range of particle and ingress protection solutions. Our Resource Library houses a curated collection of high tech fit for purpose materials.

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