Radial shaft seal RK

rotaryelastomerNBR

Product description
The Radial Oil Seal Type RK is a duo rotary shaft seal featuring an elastomeric outer diameter and two inserted tension springs. It is designed for separation of two media under low differential pressure and for shafts exposed to heavy external contamination.

Design and materials
Duo radial oil seal; variants with metal outer casing and RL design for increased press fit in the bore are available on demand. Standard elastomer materials: NBR and FKM. Further materials and coatings available on request to meet specific media compatibility requirements.

Fields of application

• static
• dynamic
• single acting
• double acting
• linear
• rotating
• oscillating

Main use
Separation of two media for rotating shafts in industrial equipment

Materials
Elastomers (standard: NBR, FKM), metal components for casing and reinforcement

Technical values

• Materials (standard): NBR, FKM
• Pressure: up to 0.05 MPa
• Temperature (NBR): -30°C / +100°C (material dependent)
• Temperature (FKM): -20°C / +200°C (material dependent)
• Speed: depending on material and diameter

Maximum values (temperature, speed and pressure) are not simultaneously applicable; permissible ranges depend on chosen material and the media in contact.

Technical specifications

• Type: Duo radial oil seal with elastomeric outer diameter and two tension springs
• Available design options: metal outer casing; RL design for increased press fit in the bore
• Standard materials: NBR, FKM
• Main application: separation of two media for rotating shafts
• Max pressure: up to 0.05 MPa
• Temperature ranges: NBR -30°C to +100°C; FKM -20°C to +200°C (material dependent)
• Speed: dependent on material and shaft diameter