High-Performance Rotary Seals

Rotaflon™ VS-Series

For sealing dynamic, rotary motion

VS-Series rotary seal installation example
IMVS-RS20B - High Pressure Rotary Seal

VS-Series spring-energized high-performance rotary shaft seals are generally designed for use in high pressure and low to mediumspeed rotary applications. …More Info

The seal lip and seal body are constructed from PTFE composite materials or other highly engineered polymer materials to meet the most challenging rotary sealing applications. These compounds offer low friction and the widest temperature range, and are suitable for sealing corrosive and abrasive media. The Rotaflon VS-Series employs a V-shaped spring to energize the seal lip to provide a constant, uniform load of the seal lip on the rotating shaft for improved seal ability under low pressure.  The standard spring is a 300 series stainless steel material; other materials are also available. Anti-rotational devices, such as o-rings or flanges, are utilized to prevent the seal from rotating with the shaft.

Capabilities Data Rotaflon™ VS – Series

  • Some designs capable of sealing up to 10,000psi(1,380bar)*
  • Surface speeds up to 1,200fpm(6m/s)* at low pressure
  • Vacuum sealing
  • Can tolerate dry running conditions
  • Wide tolerances, eccentricity and misalignment
  • Seals corrosive and abrasive media
  • Low friction and wear
  • Easy to assemble and disassemble
  • Extended seal life
  • Available quickly in low quantities with no tooling charges
  • FDA compliant designs available

High-Performance Rotary Seals

Rotaflon™ VS-Series – up to 10,000psi – PV-Rating:  9.0 to 10.0

Typical Applications

– Sealing pressure from one side including vacuum

– Pumps, motors, compressors, machine tools, brakes, clutches, mixers and others.

Operating Range

Pressure: up to 10,00psi (700bar)* continuous, special designs up to 20,000psi (1,400bar)* for pressures exceeding 3,000psi (210bar), please contact engineering

Surface Speed: up to 3,500fpm (17.5m/s)* at lower pressure

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

PV-Rating: 9.0 to 10.0 depending on seal design and material

Seals can not be operated at their upper pressure and speed ratings at the same time.

Materials: Proprietary composite materials

Availability: More Info…

Most standard, non-standard, and application-specific designed VS-rotary shaft seals, in inch or metric sizes, are available with a 1-2 week turnaround. Expediting service available.

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

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: PTFE (PTFE), filled PTFE, 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, dynamic running surface finish 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 =