High-Performance Rotary Seals

Rotaflon™ RB-Series

For sealing dynamic, rotary motion

RB-Series rotary seal installation example
RB-Series rotary seal

A proprietary PTFE element is bonded to the spring-loaded elastomer rubber seal lip and combines the low friction and wear properties of PTFE with the flexibility of the rubber to adapt quickly to ever-changing operating conditions.

…More Info

Combining these characteristics makes for a more durable seal with a longer operational life and better performance under arduous operating conditions compared to conventional rubber elastomer lip seals.  Rubbercovered steel-reinforced construction provides improved static sealing between the housing bore and the seal OD.

High-Performance Rotary Seals

Rotaflon™ RB-Series – up to 100psi – PV-Rating: 4.0 to 5.0

  • Can tolerate dry running conditions
  • Low friction and wear under load
  • Tolerates minor shaft eccentricity and misalignment
  • Low torque and low energy consumption
  • Easy to assemble and disassemble
  • Extended seal life
  • Sealing pressure up to 100psi (6.9bar)*

Operating Range

Pressure: up to 60psi (4.1bar)* continuous, up to 100psi (6.9bar)* max. pressure spikes. For pressures exceeding 30psi (2bar), please contact engineering.

Surface Speed: up to 7,000fpm (35m/s)* at lower pressure

Temperature: -58 to 400°F (-50 to 200°C) depending on seal material

PV-Rating: 4.0 to 5.0 depending on seal design and material

Seals can not be operated at their upper pressure and speed rating at the same time!

Materials: Body: NBR (Nitrile), FKM, Viton®  – Seal lip: Proprietary composite materials

Application-specific and proprietary seal designs are available. Please contact engineering to get the best seal for your rotary sealing applications.

Applications & Industries

AHP Seals’ Rotary Shaft Seals are currently in successful service in the following industries:

  • Agitators
  • Augers Mixers & Dryers
  • Casters
  • Crank Shaft
  • Drilling Spindles
  • Propellers
  • Electric Motors
  • Fuel Handling Flexible
  • Couplings
  • Fuel Pumps
  • Gear Boxes
  • Gear Pumps
  • Geo-Rotors
  • Hydraulic Motors & Pumps
  • Hydrostatic
  • Transmissions
  • Compressors
  • Liquid Handling Swivel
  • Propeller Shafts
  • Racing Engines
  • Rolling Mill
  • Vacuum Pumps
  • Wheel Hubs
  • Many others

Seal Materials: The selection of the best material has a critical impact on achieving the best sealing performance. Our comprehensive range of leading edge standard-, high- and low-temperature materials include: Nitrile, Viton®, H-Nbr, PTFE (PTFE), filled PTFE, Aflas®, EPDM, Silicone, FDA compliant materials, along with our proprietary specialized materials. More Info on Materials

*Maximum values depend on seal material, seal configuration, media, temperatures, pressures, surface speed and working environment. Data provided are guidelines for ideal operating conditions.  Seals cannot be operated at their upper pressure and speed ratings at the same time. For maximum seal life expectancy, do not operate your seal beyond 75% of any of its operating limits. Please consult engineering  or call 1-800-283-7140 for advice.

American High Performance Seals assumes no obligation or liability for any advice furnished or results obtained with respect to these products. All such advice is given and accepted at the buyer’s risk.

This information, based on our experience, is offered as part of our service to customers. It is intended for use by persons having technical skill, at their own discretion and risk. We do not guarantee favorable results, and we assume no liability in connection with its use.

Calculate the PV-Rating of the seal required for your application using calculator below:

The PV-Rating of an AHPSeal rotary seal gives an indication of the seal’s ability to withstand the stress applied to a seal due to sealing pressure as the shaft rotates with velocity. The higher the PV-Rating is, the higher the seal’s ability is to handle a higher combination of pressure and rotational velocity, with 10 being the highest. This is to only be used as a guide for lubricated operating conditions to narrow down possible sealing products.
Seals can not be operated at their upper pressure and speed rating at the same time!

Please contact one of our experienced seal engineers to select the best seal for your application.

PV-Rating Calculator:
Shaft Diameter :
Pressure :

PV-Rating =