O-ring seal

circularroundelastomer

Depending on the application temperature range and medium, FEP-encapsulated O-rings have an elastic core made of either FKM or VMQ. Due to the very high chemical resistance of the FEP envelope, the core material is protected against attack by the medium. (Please find the material overview at the end of this page.) O-rings are therefore ideal for very high chemical and thermal stresses and present, at the same time, the properties of customary elastomers. Mounting requires special care since FEP is limitedly expandable and compressible. Its flexibility can be increased when heated up to 80 °C to 100 °C in hot water or oil. Application range Temperature: -55°C to +200°C (depending on the core material) Elastomer-O-rings Elastomer O-rings are universal seals with many advantages. A high sealing effect and small installation space requirement combined with low twisting forces distinguishes this type of seal. It is used mainly in static applications. An elastomer O-ring is suitable for use as a dynamic seal or in linear and rotary motions only to a limited extent. Elastomer O-rings are ideally suited for large pressures and high thermal stresses. They show minimal abrasion wear and have a high service life. These low-priced seals are available in various shore hardness grades and for many media. In case of poor lubrication stick-slip effects may occur. After long standstill periods there is a risk of adhesion and gap extrusion is also possible.