Kalrez®
Kalrez® is a cross-linked rubber which compresses easily and seals effectively on all types of surfaces.
Unlike plastics which creep, Kalrez® maintains a tight, effective seal.
After exposure to aggressive chemicals and temperatures that cause other rubbers to swell excessively, harden or become brittle, Kalrez® parts continue to perform.Proven chemical resistance
Kalrez® parts have virtually universal chemical resistance and is far more resistant to swelling, a key cause of seal failure, and to other forms of chemical attack than other elastomers.
With over a decade of field and laboratory experience, Kalrez® parts have proved their long-term resistance to more 1500 chemicals.Less swelling
Chemically induced swelling can cause O-rings and sealing components made of other rubbers to expand out of retaining grooves and produce leaks. Kalrez® parts resist swelling in a wider range of chemicals than any other elastomer over a wide range of temperatures.
High temperature resistance
Long-term exposure to elevated temperatures can cause other elastomers to become hard and brittle. Kalrez® parts retain their elasticity and recovery properties even after long-term exposure to temperatures up to 327C/620F.
More reliable than metal
Because they rely on precision machined surfaces, perfect metal seals are hard to produce and prone to failure. Kalrez® parts conform to irregular metal surfaces as well as being easy to install and replace.
Outperforming PTFE
Kalrez® parts are the only elastomer components that match PTFE in chemical resistance. Unlike PTFE, Kalrez® parts have the elasticity and recovery properties of rubber that are vital to many sealing applications. Also, unlike PTFE, Kalrez® parts do not creep or flow and reduce shaft fretting to a minimum in dynamic use.
M Seals - a Kalrez® distributor
As an authorized Kalrez® distributor, M Seals has the expertise to support your needs for demanding sealing applications. We have worked closely with the Du Pont Technical Development Laboratories for many years. M Seals stock a large number of standard O-rings in Kalrez® ready for immediate delivery.