Radial seal RR

rotaryelastomermetal

Overview
The Radial Oil Seal Type RR is designed as a pressure-resistant rotary sealing. It features a metal outer diameter for increased press fit in the bore and an additional clamping ring for the PTFE gasket. It is suitable for low-viscosity media and gas applications if the running surface is machined accordingly. The PTFE seal lip and the metal casing provide very good chemical resistance. Standard constructions use PTFE (virgin or filled), a stainless steel casing (material 1.4571) and sometimes an elastomeric preload component. Further materials are available on request.

Performance and benefits
High circumferential speeds and stick-slip-free running are possible even with deficient lubrication due to the PTFE seal lip. The design is intended for rotating shafts in housings with either no pressure or pressure differentials up to 2.5 MPa.

Fields of application

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

Main use
pressurized sealing for rotating shafts

Materials (standard)
elastomers, metal, PTFE, PTFE with filling material

Technical values
PTFE with filling material

• Pressure: up to 2.5 MPa
• Temperature: -50°C to 250°C (material dependent)
• Speed: depending on material and diameter

Notes
Maximum values for temperature, speed and pressure are not simultaneously applicable; the values vary depending on material and media.

Characteristics / Technical specifications

• Main use: pressurized sealing for rotating shafts
• Design features: metal outer diameter for improved press fit; additional clamping ring for PTFE gasket
• Seal lip material: PTFE (virgin or filled)
• Casing material: stainless steel (1.4571) typical
• Optional components: elastomeric preload element in some designs
• Suitable media: low-viscosity liquids and gases (with appropriate surface treatment)
• Maximum differential pressure: up to 2.5 MPa
• Temperature range: -50°C to 250°C (material dependent)
• Speed: dependent on material and diameter