Magnetic gaskets use an combination of magnetic attraction along with compression to provide a tight, even seal. They are considered high performing, energy efficient, and resistant to temperature changes, corrosion and removal. Common uses for magnetic gaskets include doors for refrigerators, freezers, and disinfectors.
There are two primary types of magnetic gaskets. They are:
- magnetic component inside plastic (TPE) component (jacket)
- magnetic composite (not as strong as pure magnet)
Examples of some commercial magnetic gaskets include:
|Product name||Manufacturer||Forms/shapes||Comments||Oddy links|
|Elastosil R 781/80||Wacker Chemie AG Link||Magnetic composite: molded or extruded||Composed of silicone rubber base filled with 70% magnetite, thus producing a solid magnetic seal.||D-Seal, AMNH 2019; Bubble Seal, AMNH 2019|
|ILPEA magnetic gasket||ILPEA Industrie Link||Magnet jacketed with Thermoplastic elastomer (TPE)||Patented design with two gaskets in coextruded profiles. The rigid part is mounted and the soft balloon part is compressed. Magnetic strips can be inserted.||BKM 2016; MMA 2018; AMNH 2019|
|Goppion magnetic gasket||GoppionLink||Magnet jacketed with plastic||3-part, self-compressing active magnet gasket filled with bellow that adapt to glass pane||xx|
|Tricomp||Tricomp, Inc Link||Pre-made magnetic and compression gaskets, flexible metal magnetic strips||Specializes in appliance and shower doors. Also makes custom gaskets. Can use PVC and/or TPE||xx|
Links to Oddy Test results posted on AIC Wiki Materials Database Pages are included in Table above
- Make sure the magnet is not so strong that the seal is difficult to open. Long strips can be opened easier by starting at a corner.
- Many readily available forms are not useful, but some companies can make custom extrusions