Radial seal RD

rotaryelastomerNBR

Product description
The Radial Oil Seal Type RD is a rotary sealing element manufactured to DIN 3760 (design type AS). It features an elastomeric outer diameter and an elastomer sealing lip with an inserted tension spring. The RD variant includes an additional dust lip to improve protection against high external dust loads.

Use case
Designed for rotating shafts in housings where service is unpressurized or subject only to minor pressure fluctuations. Standard elastomer materials are NBR and FKM; alternative compounds are available on request.

Fields of application

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

Main use
unpressurized sealing for rotating shafts

Materials
elastomers, metal

Technical values (selection)

• Materials (standard variants): NBR, FKM
• Pressure (both variants): up to 0.05 MPa
• Temperature (NBR variant): -30°C to +100°C (material dependent)
• Temperature (FKM variant): -20°C to +200°C (material dependent)
• Speed: depending on material and diameter
• Design features: elastomeric outer diameter, inserted tension spring, additional dust lip for high external dust loads
• Note: Maximum values for temperature, speed and pressure are not simultaneously applicable; values vary depending on material and media.

Characteristics / technical specifications

• Model: Oil Seal Type RD
• Design standard: DIN 3760 design type AS
• Outer diameter: elastomeric
• Sealing element: elastomer with inserted tension spring
• Dust protection: additional dust lip variant for dusty environments
• Main applications: unpressurized rotating shaft sealing
• Standard materials: NBR, FKM (other materials available on request)
• Maximum static/operating pressure: up to 0.05 MPa
• Temperature range (material dependent): NBR -30°C to +100°C; FKM -20°C to +200°C
• Operational speed: dependent on material and shaft diameter
• Important: temperature, speed and pressure maximums are not cumulative; values depend on material and media