Varitef SH is a single acting sealing element which consists of a PTFE seal and a stainless steel spiral spring as preload element. Varitef SH is an active sealing element and as the system pressure increases, the force on the sealing edges also increase.
Varitef SH can also be used for bridging larger gaps. Due to the combination of PTFE and stainless steel, Varitef SV can be used in a wide temperature range. It can be sterilized to make it particularly suitable for valves and pumps, and for blenders in food and medical technology. Suitable for slow rotating movements.
The PTFE compound is filled with a special filler or with carbon to improve the compressive strength. Further materials upon request. Due to the design of the Varitef, there are limitations of assembly in closed groove designs. Therefore we recommend the use of an open groove for assembly ease.
Varitef SH
Fields of application
static
dynamic
single acting
double acting
Linear
Rotating
oszilating
Main use
valves, pumps, dosing devices, food and medical technology
Materials
Metalle; PTFE; PTFE with filling material
Technical values
Materials
PTFE with filling material, stainless steel spiral spring
Pressure
up to 35 MPa
Temperature
-150°C / +225°C (material dependent)
Speed
up to 20 m/s
Maximum values temperature, speed and pressure are simultaneously not applicable! The values vary in dependence of material and media. For technical queries please contact our application consultants – we have the right solution for you.
Downloads
More Varitef
Further to U-cup N1
Your contact person
Engineering - General sealing topics, special constructions
Mr. Thomas Stegmaier
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