EPDM 70

X-rings EPDM

X-rings are double-acting four-lipped seals with a profile of a X. The X-ring obtains its sealing function by the incorporation and compression in an axial or radial installation space. The sealing action is enhanced by fluid pressure.

Applications

X-rings are similar to an O-ring. For example, they serve as a radial and axial sealing of covers, bushings, and flanges or as sealing of piston and piston-rod, rotating shafts and covered helical movements. X-rings are mainly used for dynamic applications, because they need lesspressure than O-rings, and produce less friction. They also often are used for static applications and for reciprocating movements.

Benefits X-ring:

• Optimal sealing effect through improved pressure distribution
• X-rings require a small radial bias voltage, resulting in the reduced adhesion
• No adverse influence by non-woven, because the seal is positioned between the sealing lips
• Great stability in dynamic use, since the X-ring does not tend to start to roll in the groove

EPDM has good resistance to:

• hot water and hot steam
• many polar solvents (e.g., alcohols, ketones, esters)
• many organic and inorganic acids and bases
• washing brines
• silicone oils and silicone greases
• glycol-based brake fluids (special grades required)
• ozone, weathering, ageing

EPDM is not resistant to:

• all kinds of mineral oil products (oils, greases, fuels)

Application temperature range:

• -45°C to +130°C (sulfur cured)
• -55°C to +150°C (peroxide cured)