Profile rings PROFILE RINGS IN ACCORDANCE WITH DIN3869 Profile rings are used as axially static soft seals in combination with screw elements. Profile rings are used to pipe fittings, armatures, and screw plugs with screw-in connectors in combination with threaded bores. The tightening of the screw connection causes the easily manageable elastomer profile ring to press inward, producing the sealing effect on the surfaces to be sealed. The profile sealing ring is designed to prevent the escape of media to the outside. This avoids the loss of pressure. Its special geometry keeps the seal from twisting during mounting and in the installation space. At the same time, the profile seal ring keeps dust and dirt out. The mechanical deformation of the cross-section is kept at a minimum thanks to the geometry of the profile. DIMENSIONS The currently available dimensions can be found on our website dichtomatik.fst.com or on our online ordering platform EASY. APPLICATIONS Profile rings are used in a wide range of applications in general industry. Typical applications include: • Pipe fittings • Construction machinery • Agricultural machinery • Hydraulic presses • Injection molding machinery • Hydraulic valves and fittings • NBR and FKM profile rings for gas devices and equipment YOUR ADVANTAGES AT A GLANCE • Re-mountability of the seal • Low mechanical deformation of the cross-section under compressive stress • No twisting of the seal in the groove • Easy manageability during mounting • Low sensitivity to gap extrusions • No relative movement in the groove during pressure pulsation • Low leakage even with low-viscosity media • Minimal cross-section deformation • Profile rings made of NBR are suited to applications in gas devices and equipment in accordance with EN 549 B1/H3 (0 to +80°C) • Profile rings made of FKM are suited to applications and gas devices and equipment in accordance with DIN EN 549 E1/H3 (0 to +150°C) INSTALLATION SPACE AND MOUNTING The installation space must be carried out in accordance with DIN 3852 Part 11. Accordingly, the surface quality must be maintained at this standard. Other possible installation spaces are defined in accordance with ISO 1179, ISO 9974-2, ISO 9974-3 and ISO 11926. FREUDENBERC INNOVATING TOGETHER

All damage to the profile ring must be avoided during assembly. The sealing function is not optimal otherwise. Striations, cavities and scratches must be avoided. Dust, dirt, metal shavings or other foreign bodies must be removed. It is essential to ensure the right installation position. The threaded tips must be covered by using a mounting aid. Mounting tools should be made of a soft material (e.g. POM) and free from sharp edges. The profile rings and the installation space should not be greased for mounting. EPDM perox • Hot water and steam • Alkaline washing solution, caustic soda and potassium...