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Gumo-metal gaskets POWERgasket DRS-2 made of NBR and EPDM. Two sealing edges, low tightening torque, suitable for plastic flanges. According to EN 1514-1, in stock.
These values are approximate and may be influenced by other factors. We will be happy to consult with our expert to make sure you make the right choice.
DRS-2 rubber gasket made of NBR.
Rubber-metal seal DRS-2 made of EPDM with KTW, DVGW (drinking water) approval.
Rubber-metal seals combine a rigid metal support ring with a flexible rubber sealing layer – resulting in a seal with high stability during installation while also being able to compensate for flange irregularities without the need for high torque. The POWERgasket DRS-2 series is equipped with two sealing edges on the inner diameter, which increase tightness under internal pressure due to the "opening effect". The seals are also suitable for plastic flanges, where traditional flat seals require excessively high torque.
In standard rubber-metal seals with an O-ring or wedge, over-tightening can lead to exceeding the specific pressure or relaxation of the sealing element. The DRS-2 seal, on the other hand, has two stable sealing edges (lips) on the inner diameter, which work differently: as the internal pressure of the medium increases, the edges "open up" and the tightness increases. There is no risk of relaxation or exceeding the specific pressure – the seal behaves more reliably over a wider range of tightening torques.
Yes – this is one of the key reasons for the creation of the DRS-2 profile. Plastic flanges made of PP, PVC, or PE cannot withstand high tightening torques required by standard flat seals. Thanks to the pair of flexible sealing edges, the DRS-2 achieves reliable sealing even at the lowest permissible tightening torques, without risking damage to the flange.
For drinking water distribution, choose the DRS-2 EPDM version, which is certified according to KTW and DVGW and meets the requirements of the Czech Regulation No. 409/2005 Coll. for short-term contact with drinking water. The NBR version is intended for gas and industrial applications with petroleum substances – it is not certified for drinking water.
Yes. Both versions (NBR and EPDM) are available in stock in all dimensions according to EN 1514-1. Online filtering is available on the website by DN, PN, inner diameter, outer diameter, and thickness.
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