Piston seals for hydraulic cylinders

Application:
Standard piston seal (u-cups)

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Stroke speed:
max. 0.5 m/s

Special features:
Large selection of standard dimensions available as moulded part

Application:
Standard piston seal (u-cups) with triangular support ring, for larger sealing gap or pulsating pressure. 

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Stroke speed:
max. 0.5 m/s

Application:
Standard piston seal (u-cups) with back-up ring, for larger sealing gap or pulsating pressure. 

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Stroke speed:
max. 0.5 m/s

Application:
U-Cup with additional preload element, increased tightness in depressurized condition

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Preload element:
NBR, FPM, EPDM, other materials on request

Application:
U-Cup with additional preload element and triangular support ring, low pressure range, increased tightness in depressurized condition

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Preload element:
NBR, FPM, EPDM, other materials on request

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Stroke speed:
max. 0.5 m/s

Application:
U-Cup with additional preload element and support ring, low pressure range, increased tightness in depressurized condition

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, Other materials on request.

Preload element:
NBR, FPM, EPDM, other materials on request

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Stroke speed:
max. 0.5 m/s

Application:
U-Cup for pneumatics with round sealing lip.

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Stroke speed:
max. 0.5 m/s

Application:
Symmetrical U-cup for rod and piston sealing.

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Stroke speed:
max. 0.5 m/s

Application:
Symmetrical U-Cup for rod and piston sealing with additional preload element and back-up ring, low pressure range, increased tightness in depressurized condition.

Materials:
H-PU (up to 400bar, -30 to 100°C), NBR (up to 160bar), FPM (up to 160 bar, -30 to 200°C), EPDM, LT-PU, other materials on request.

Preload element:
NBR, FPM, EPDM, Other materials on request

Stroke speed:
max. 0.5 m/s

Chevron set. If standard dimensions are not available V-rings made of PU, NBR, FPM, POM, PE1000, PTFE-combounds possible. As standard made of NBR, NBR fabric, FPM, FPM fabric. If necessary, also pressure and support ring made of POM PE1000, PA, PTFE compound, gunmetal etc. possible. Slotted design also available. Good selection of standard dimensions available from stock.

No longer recommended for new construction.

Materials:
H-PU, NBR, FPM, EPDM

Proven symmetrical profile with high preload in the low-pressure range, good tightness, no longer for new constructions.

single sleeve for use in commercial chevron set in case of repair. Original sample is advantageous.

classic pneumatic profile made of NBR also with radius on the sealing edge, hydraulic insert up to 160 bar.

symmetrical pneumatic seal for universal use, mostly made of NBR

No longer recommended for new construction.

Materials:
H-PU, NBR, FPM, EPDM

Application:
Double-acting piston seal with O-ring as preload element, depending on material up to 800 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Material sealing ring:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, other materials on request.

Application:
Double-acting piston seal with O-ring as preload element and back-up rings on both sides, material-dependent up to 600 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Sealing ring material:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, other materials on request

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Application:
Single acting piston seal with O-ring as preload element, material dependent up to 400 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Material sealing ring:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, other materials on request.

Application:
Single acting piston seal with O-ring as preload element and back-up ring, material dependent up to 600 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Seal ring material:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, Other materials on request

Back-up ring material:
PTFE, PTFE compounds, POM, PEEK, PA

Application:
Double acting piston seal with rectangular profile as preload element, for large diameters material dependent up to 400 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Seal ring material:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, other materials on request.

Double-acting piston seal set, outer ring mostly made of PU, high tightness, very good service life, very wide range of dimensions. Many standard dimensions available at short notice.

small-diameter piston seal set, originally designed for existing O-ring grooves, outer ring made of PTFE and PTFE compounds, wide range of dimensions.

for high-frequency applications optionally with O ring or rectangular ring as preload element. Running ring made of PTFE compound. Use only after consultation.

Double-acting piston seal with 2 O-rings as preload element. This results in a more defined contact pressure of the sealing edges, but is also suitable for less deep installation grooves. Elestomer part (X-ring) on the running surface causes increased sealing effect. Very wide range of applications. Material and medium dependent up to 600 bar, temperature range -50 to 200°C. Outer ring mostly made of PTFE compound, but also POM, PEEK, PA, PE1000 etc. possible. Almost any diameter up to max. 3000 mm possible.  Special designs for use under radiation exposure, for aggressive media and many more. Selection after consultation.

Double-acting piston seal with O-ring as preload element. This results in a more defined contact pressure of the sealing edges. Elestomer part (X-ring) on the running surface causes increased sealing effect. Very wide range of applications. Material and medium dependent up to 600 bar, temperature range -50 to 200°C. Outer ring mostly made of PTFE compound, but also POM, PEEK, PA, PE1000 etc. possible. Almost any diameter up to max. 3000 mm possible.  Special designs for use under radiation exposure, for aggressive media and many more. Selection after consultation.

Application:
Single acting piston seal with rectangular profile as preload element, for large diameters material dependent up to 400 bar, temperature range -50 to 280°C, diameter up to max. 3000 mm possible. 

Seal ring material:
PTFE compounds, POM, PEEK, PA, PE1000, PU, other materials on request.

Preload element material:
NBR, FPM, EPDM, other materials on request.