KASTAS - PISTON SEALS

The K19 double-acting compact piston seal has a robust design which contains an elastomer energizer, a PTFE ring and two thermoplastic back-up rings. The design has been a preferred design for a wide range of mobile hydraulic applications with low friction, low extrusion and long service-life properties.Advantages• Low coefficient of friction
• Good wear resistance
• High extrusion resistance
• Design operating at variable pressures
• Long service lifeArea of Application• Construction machinery
• Excavators
• Presses
• Injection moulding machines
• Heavy duty hydraulic cylindersMaterial Code Pressure
(max) bar Temperature
(max) °C Sliding Speed
(max)- m/sPTFE
NBR
POM PT6003
NB8001
PM9901 400 -30/+100 1.5

K17 consists of PTFE sealing ring and energizer elastomer oring. It has a wide range of usage thanks to the suitability with ISO housings. It can be produced from PTFE materials with different fillers.Advantages• Low friction and stick-slip free
• Excellent dynamic and static sealing
• Long service life
• High extrusion resistance
• No hydrodynamic pressure
• High speeds and frequencies
• Designed for grooves according to ISO 7425/1Area of Application• Cranes
• Injection moulding machines
• Hydraulic press cylinders
• Forklifts
• Construction machinery
• Servo cylinders
• Hydraulic breakers
• Wind turbines
• Automotive industryMaterial Code Pressure
(max) bar Temperature
(max) °C Sliding Speed
(max)- m/sPTFE
NBR PT6003
NB7001 400 -30/+105 15.0

K42 is a five piece double acting compact seal which consists of elastomeric sealing element, thermoplastic elastomer backup rings and thermoplastic guide rings. It is designed for working at high and variable pressures in heavy duty applications.Advantages• Effective sealing during vibration and shock loading
• High extrusion resistance at high pressures
• High sealing performance in locked systemsArea of Application• Construction machinery
• Excavators
• Lifting platforms
• Heavy duty machinaryMaterial Code Pressure
(max) bar Temperature
(max) °C Sliding Speed
(max)- m/sNBR
TPE
POM NB8001
TP7301
PM9905 700 -30/+100 0.5

K753 double acting piston seal consists of one PTFE profile ring, one elastomer X-ring and an O-ring as energizer. K753 is an ideal piston seal for systems which has two different media in the system seperated by the piston seal such as fluid and gas.Advantages• Able to work at variable media types, liquid-liquid or liquid-gas systems
• Designed for grooves according to ISO 7425/1
• High resistance to variety of chemicals and high temperature with use of different elastomers
• High pressure resistance
• Design providing good sealing performance at variable pressures
• High wear resistance
• Long service lifeArea of Application• Piston accumulators
• Hydro-pneumatic cylinders
• Presses
• Loading platformsMaterial Code Pressure
(max) bar Temperature
(max) °C Sliding Speed
(max)- m/sPTFE
NBR PT6003
NB7001 400 -30/+105 2.0