Double Acting Seals

Oz Seals Pty Ltd

Double Acting Seals

 Double acting seals are the most commonly used seals in hydraulic cylinders. The benefit of a double acting piston seal is its ability to be pressurised from both directions whether it be fluid or air. This allows the rod to retract back and forth.

Double Acting Seals come in a variety of different profiles to suit different sealing applications including, low, medium or heavy duty. View more info in the catalogue. For sizes and direct orders, visit Sealnet.


PK8

Material: WIFFLON Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material: TMCF Pressure: 400 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • Double acting glide style piston
  • Suited for one piece pistons
  • PTFE seal face with energiser
  • Dual face materials gives pressure capability options

Application

  • Not suitable for cylinder expected to hold position
  • Excellent for stick slip movement
  • Excellent for high speed movement

Fluids

  • Mineral based oils, water/glycol and water emulsions

PK8C

Material: WIFFLON Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material: TMCF Pressure: 400 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • Double acting glide style piston
  • Suited for one piece pistons
  • PTFE seal face with energiser
  • Dual face materials give pressure capability options

Application

  • Not suitable for a cylinder expected to hold position
  • Excellent for stick slip movement
  • Excellent for high speed movement

Fluids

  • Mineral based oils, water/glycol and water emulsions

GS9C

Material: WIFFLON Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material:  TMCF Pressure: 400 bar Speed: 4 m/s Temperature: -200 to + 200°C

Features+

  • GS9C double acting gland seal
  • Double acting glide style piston
  • Suited for one piece pistons
  • TMCF/WIFF seal face with nitrile energiser
  • Dual face material gives pressure capability options

Application

  • Not suitable for a cylinder expected to hold position
  • Excellent for stick slip movement
  • Excellent for high speed movement

Fluids

  • Mineral based oils, water/glycol and water emulsions

GS9D

Material: WIFFLON Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material:  TMCF Pressure: 400 bar Speed: 4 m/s Temperature: -200 to + 200°C

Features+

  • Double acting glide style gland seal
  • Suited for one piece pistons
  • TMCF/WIFF seal face with nitrile energiser
  • Dual face materials gives pressure capability options

Application

  • Not suitable for a cylinder expected to hold position
  • Excellent for stick slip movement
  • Excellent for high speed movement

Fluids

  • Mineral based oils, water/glycol and water emulsions

GS20

Material: ORSP Pressure: 400 bar Speed: 0.5 m/s Temperature: -30 to + 110°C
Material:  NBR Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to + 100°C
Material:  VITON Pressure: 160 bar Speed: 0.5 m/s Temperature: -20 to + 200°C

Features+

  • GS20 double acting gland seal
  • Suited for solid positions
  • Heavy duty rubber element with Teflon or Nylon backups

Application

  • Light to medium duty double acting seal

Fluids

  • Mineral based oils, water/glycol and water emulsions

PK8BU

Material: ORSP Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material: TMCF Pressure: 400 bar Speed: 4 m/s Temperature: -20 to + 200°C
Material: MOTUF Pressure: 400 bar Speed: 1 m/s Temperature: -30 to +110°C

Features+

  • PK8BU double acting piston seal
  • Suited for solid positions
  • 4 Piece seal consisting of a filled PTFE face, thermoplastic split, anti extrusion rings, nitrile rubber energiser
  • Capable of absorbing shock loading

Application

  • Not suitable for cylinders that are expected to hold position
  • Medium to heavy duty double acting seal
  • Popularly used in earth moving equipment

Fluids

  • Mineral based oils, water/glycol and water emulsions

PKDA

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to + 120°C

Features+

  • PKDA double acting seal
  • Double acting piston seal with Acetal ‘L’ shaped wear rings
  • Rubber fabric seal bonded to rubber energiser
  • Suited for solid pistons
  • Light to medium duty rubber seal with activated bearing rings
  • Improved abrasion resistance

Fluids

  • Hydraulic fluids, petroleum fuels and oils

PRKCR

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • PRKCR double acting seal
  • Double acting seal with single acting capabilities
  • Excellent choice for double acting applications where minimal dynamic leakage is required
  • Excellent water resistance
  • Advanced face geometry provides enhanced dynamic and static sealing
  • More tolerant to dirt and contamination

Fluids

  • Hydraulic fluids, petroleum fuels and oils

PKOK

Material: MONYT / NBR Pressure: 700 bar Speed: 1 m/s Temperature: -60 to +130°C

Features+

  • PKOK double acting piston seal
  • Suited for one piece pistons
  • Dual face materials gives pressure capability options
  • Perfect sealing for low and high pressures

Fluids

  • Hydraulic fluids, petroleum fuels & oils

PRKOJ

PRKOJ
Material: WIFFLON Pressure: 500 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material: NBR Pressure: 500 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • PRKOJ double acting piston seal
  • Suited for one piece pistons
  • Dual face materials gives pressure capability options
  • Perfect sealing for low and high pressures

Fluids

  • Hydraulic fluids, petroleum fuels and oils

PK20

Material: ORSP Pressure: 400 bar Speed: 0.5 m/s Temperature: -30 to +110°C
Material: NBR Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +100°C
Material: VITON Pressure: 160 bar Speed: 0.5 m/s Temperature: -20 to + 200°C

Features+

  • PK20 double acting piston seal
  • Suited for solid pistons
  • Heavy duty rubber element with Teflon or Nylon back ups

Application

  • Light to medium duty double acting seal

Fluids

  • Mineral based oils, water/glycol and water emulsions

PK56

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PK56 double acting piston seal
  • One piece double acting piston seal
  • Suited for solid pistons
  • Heavy duty polyurethane seal
  • Superior wear resistance as compared to a rubber seal

Application

  • Light to medium duty double acting seal

Fluids

  • Mineral based oils, water/glycol and water emulsions

PK56BU

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PK56BU double acting piston seal
  • Suited for solid pistons
  • Heavy duty rubber element with Wifflon back ups
  • Multiple material option exists

Application

  • Light to medium duty double acting seal
  • Typically used in agricultural equipment

Fluids

  • Mineral based oils, fluids, fuels and water in oil emulsions

PK56DA

Material: NBR Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +120°C

Features+

  • PK56DA double acting piston seal
  • Suited for solid pistons
  • Heavy duty rubber element
  • Multiple material options exist

Application

  • Light to medium duty double acting seal
  • Typically used in agricultural equipment

Fluids

  • Mineral based oils, fluids, fuels and water in oil emulsions

PK56JTP

Material: NBR Pressure: 500 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • PK56JTP double acting piston seal
  • Double acting piston seal with acetall “L” shaped wear rings
  • Rubber fabric seal face bonded to rubber energiser
  • Suited for solid pistons
  • Light to medium duty rubber seal with activated bearing rings
  • Improved abrasion resistance

Fluids

  • Hydraulic fluids and petroleum fuels and oils

PK58

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PK58 double acting piston seal
  • Suited for split pistons
  • Heavy duty polyurethane sealing element with back up rings
  • Wear resistant polyurethane

Application

  • Heavy duty double acting seal

Fluids

  • Hydraulic fluids and petroleum fuels and oils

PROJBU

PROJBU_1
Material: WIFFLON / TMCF / MOTUF/ NBR Pressure: 300 bar Speed: 0.5 m/s Temperature: -30 to +110°C

Features+

  • PROJBU double acting piston seal
  • Constructed with tough, wear resistant Wifflon face
  • High shock load capacity
  • High pressure capability

Application

  • Heavy duty double acting seal

Fluids

  • Hydraulic fluids and petroleum fuels and oils

PKAQ

Material:  MOTUF Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C
Material: TMCF Pressure: 500 bar Speed: 0.5 m/s Temperature: -20 to +200°C

Features+

  • PKAQ double acting piston seal
  • Low friction – no stick slip
  • High strength precision machined PTFE cap ring
  • Wide range materials available for special applications
  • Prevents rolling
  • Positive sealing

Application

  • Heavy duty double acting seal

Fluids

  • Hydraulic fluids and petroleum fuels and oils

PKDAS

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PKDAS double acting piston seal
  • Suited for one piece pistons
  • Nitrile rubber sealing element with polyester anti extrusion rings
  • Integral wear rings

Fluids

  • Mineral based oils, fluids, fuels and water in oil emulsions

PKSP

Material:  WIFFLON Pressure: 350 bar Speed: 0.5 m/s Temperature: -40 to +120°C
Material:  ORSP Pressure: 250 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PK58 double acting piston seal
  • Suited for split pistons
  • Heavy duty polyurethane sealing element with back up rings
  • Wear resistant polyurethane

Application

  • Heavy duty double acting seal

Fluids

  • Hydraulic fluids and petroleum fuels and oils

PK56SB

Material: ORSP Pressure: 500 bar Speed: 0.5 m/s Temperature: -40 to +120°C

Features+

  • PK56SB Double Acting Piston Seal
  • Suited for solid pistons
  • Heavy duty rubber element

Application

  • Light to medium duty double acting seal

Fluids

  • Mineral based oils, water/glycol and water emulsions

GF2

Material: MOTUF Pressure: 400 bar Speed: 4 m/s Temperature: -30 to +110°C
Material:  TMCF Pressure: 400 bar Speed: 4 m/s Temperature: -200 to + 200°C

Features+

  • GF2 Double Acting Gland Seal
  • Suited for one piece pistons
  • Heavy duty applications

Application

  • Excellent for the most extreme environments
  • Excellent for passing over ports
  • Wide tolerance of temperature, fluid compatibility, and extrusion gap

Fluids

  • Hydraulic fluids and petroleum fuels and oils