Home 9 Resources 9 Blog 9 PS-SEAL® Non-Standard – dynamic seals in standard sizes with different lip configurations

PS-SEAL® Non-Standard – dynamic seals in standard sizes with different lip configurations

The Garlock PS-SEAL® Standard is a PTFE-based high-performance seal that meets a wide range of requirements in practical use.

In some applications, however, the successful PS-SEAL® Standard proved not to be completely suitable. That’s why a team of Garlock experts developed additional designs: The PS-SEAL® Non-Standard.

With the PS-SEAL® Non-Standard, a range of variants is available. The variants are for application areas that require special configurations, since lip material and lip layout can be varied as desired.

The Garlock PS-SEAL® Non-Standard is known for reliable sealing of rotating shafts at high circumferential speeds, high pressures, and extreme temperatures from -90° to +260°C. The wide range of lip materials and layouts means the PS-SEAL® Non-Standard gives excellent sealing in difficult applications. The PS-SEAL® Non-Standard can handle PxV (Pressure x Velocity) of 45 bar.m/s for lubricated applications and 15 bar.m/s for dry running.

Furthermore, with the PS-SEAL® Non-Standard, Garlock offers a solution that fits into the small installation spaces of conventional shaft seals. Should none of the possible special configurations of PS-SEAL® Non-Standard prove to be suitable, the PS-SEAL® Special is available, with which almost all desired requirements can be achieved.

Be it several lips in a row, lips for media separation or a design with back to back lips – the PS-SEAL® Non-Standard offers a wide range of configuration options. In particular, the PS-SEAL® Non-Standard design with reverse lip is frequently used, and highly valued, in the food and pharmaceutical sectors.

Reverse lip –

a single lip points out of the housing towards the media.

The success of this design is astounding:

The dead space is reduced by almost 80%, which has an extremely positive effect on cleaning and significantly reduces possible contamination. A clear plus in daily use.



Single lip with dust lip

the seal lip sits in the housing as standard, and is supplemented by a dust lip facing towards the dry side.

If the working environment is contaminated with dust, the PS-SEAL® Non-Standard can also be equipped with a dust lip. Here, the suitability of the PS-SEAL® lips for dry running is particularly exploited, thus increasing the performance of the seal.


Back to back

two lips seal equally on both sides.

Safe separation of two media is also possible – and this with only one seal. Where two shaft seals would otherwise have to be used back to back, this task is accomplished by a PS-SEAL® Non-Standard in back-to-back design – and with only the smallest installation width.



two seal lips towards the media.

If longer service life is required or if even greater plant safety is desired, a PS-SEAL® Non-Standard Tandem is a good choice. With the smallest installation width, two seal lips are now available instead of just one

Of course, the individual types of PS-SEAL® Non-Standard can also be combined with each other, thus offering every user an optimum range of sealing solutions.

If the versatile application range of PS-SEAL® Standard and PS-SEAL® Non-Standard does not represent the optimum solution, further variants are possible with PS-SEAL® Special on consultation with Garlock.

Garlock GmbH
Falkenweg 1
41468 Neuss
+49 2131 349-0
garlockgmbh @

© 2024 Garlock GmbH, Germany

Garlock Global Website

Career Site Europe