Celrubber NP400 - EPDM - Adhesive - 6mm (h) - 20mm (w) - Roll 60m

NPC 400 is an EPDM cellular rubber that distinguishes itself by its high material quality and versatile applicability. The basis of this material, EPDM, ensures excellent weather-resistant properties. For example, NPC 400 is particularly resistant to UV radiation and ozone, which means that it will not age or discolour under the influence of sunlight or air pollution. This makes it suitable for both indoor and outdoor applications, whereby the cellular rubber retains its performance even with long-term exposure to changing weather conditions. Even at extreme temperatures, ranging from -40 °C to +80 °C and briefly rising to +100 °C, the material remains functional. Thanks to this wide temperature tolerance, it can be used not only in the Netherlands and neighbouring countries, but also in colder regions such as Scandinavia.

The material has a closed-cell structure, which means that it is completely airtight, dustproof and waterproof. This ensures a reliable seal, without the cellular rubber ageing faster or showing stains when in contact with moisture. Despite the closed structure, the material remains very flexible and resilient. When pressed, it returns effortlessly to its original shape. These mechanical properties make it ideal for dynamic applications in which the material is repeatedly subjected to pressure. The density of this cellular rubber is on average 120 kilograms per cubic meter, with a margin between 100 and 130 kilograms per cubic meter, in accordance with DIN EN ISO 845. The hardness is around 40 Shore 00, which corresponds to approximately 10 to 15 Shore A.

NPC is one of the few manufacturers in Europe that manufactures EPDM cellular rubber directly from master blocks. This makes it possible to peel the material to size in almost any desired thickness. The available thicknesses range up to 60 millimeters in one piece, but by joining layers it can also be supplied in thicker variants. EPDM cellular rubber is available in all kinds of shapes, such as plates, strips, blocks, discs, rings and even reels. These versions can be provided with a self-adhesive layer on one or both sides if desired. This self-adhesive variant makes installation easier and faster, which is particularly practical in applications where time or precision are important.

In terms of chemical resistance, the material is highly resistant to external influences such as UV and ozone, but less suitable for contact with oils or metals such as copper and silver. This should be taken into account when choosing specific applications. The low water absorption of less than five percent, measured according to ASTM D1056-14, confirms its suitability for humid or wet environments. The tensile strength of the material is 420 kilopascals, with an elongation at break of 140 percent. Both values ​​are more than sufficient for industrial applications and fall within the standards as laid down in DIN EN ISO 1798.

NPC 400 is widely used in sectors where durability and reliability are essential. In the automotive industry, it meets strict quality requirements, including fire safety standards such as FMVSS302. This standard guarantees that the material can be safely processed in vehicles. The high UV and ozone resistance also makes it particularly suitable for the solar industry, where seals are often exposed to severe weather conditions on roofs. Cellular rubber is also widely used in the construction sector. Here, it is used, among other things, as a draught excluder or sealing tape to seal seams and gaps airtight. In the context of airtight construction, it is a valuable solution, for example in window constructions or between partition walls. It is also used in the electrical industry to protect cabinets and housings against dust and moisture.

Another application is the use as flat cellular rubber rings, which function as sealing or filling rings. These can, for example, serve as a simple seal for screw holes. Due to its damping properties, NPC 400 is also used to absorb vibrations and shocks. This is done, for example, under conveyor belts or as acoustic insulation tape in timber frame construction. The compression properties are important here: at a compression of 25 percent, the required force is approximately 42 kilopascals, while at 50 percent compression, approximately 110 kilopascals are required. The material also has a low compression set, which means that it only shows limited permanent deformation after prolonged compression.

NPC 400 is produced according to European guidelines and is fully REACH and RoHS compliant. It does not contain any CFCs or HCFCs and is also recyclable. The expected shelf life under correct storage conditions is approximately two years.