Download pdf - NOK rod seals - Industrial Seal rod seals.pdf · Pressure (with backup) 10,150 PSI / 70 Mpa Linear Velocity 3.0 ft/s / 1.0 m/s Temperature (Typ.)-35°C/100°C to -31°F/212°F This

Industrial Seal Inc. | www.industrialseal.com | Phone 800.777.6327

RB NOK Asymmetrical Profile Rod U-Cup with Double Lip RB asymmetrical C-cup is suited for heavy duty mobile and stationary service when rod leakage must be kept to a minimum. Double lip design reduces fluid from passing outside the cylinder and stops contamination from entering the front sealing lip.

Technical Data

Pressure (PSI): 5000

Max. Temp (F°): 230

Speed (ft/s): 4.2


HBTS Profile NOK O-Ring Energized Low Friction PTFE Rod Seal This is used to absorb the impact and fluctuating pressure at high load, to isolate high temperature fluid, and to improve the durability of the packing. It has small friction resistance and is suitable for high speed, short stroke operation. A slit on the tapered surface can leak back pressure.

Technical Data

Pressure (Typ.)5100 PSI / 35 MPa

Linear Velocity 4.5 ft/s / 1.5 m/s

Temperature (NBR for low temp.)-55°C/100°C to -67°F/212°F

Temperature (FKM) -20°C/160°C to -4°F/320°F

This has the same function as HBY. It has small friction resistance that is suitable for high speed, extremely short stroke operations. A slit on the tapered surface (non-sliding surface) allows pressure to leak back. It is used in combination with rod packings to absorb the impact and fluctuating pressures at high load, to isolate high temperature fluids, and to improve the durability of the packing.

§ A626 uses general petroleum hydraulic fluid oil, water-glycol type hydraulic fluid oil, and oil-water emulsion type hydraulic fluid oil.

§ F201 uses general petroleum hydraulic fluid oil, and phosphate ester type hydraulic fluid oil.


HBY Profile NOK Buffer Seal with Anti-Extrusion Rings U-Cup with asymmetric profile of the sealing lips, and chamfered sealing edges with pressure - relieving capabilities to prevent inner pressure entrapment when employed in tandem sealing system. This rod seal is designed to absorb impact pressures and pressure fluctuations under high-load conditons, thus increasing the life of the tandem seal.

Technical Data

Pressure 8000 PSI / 55 MPa

Linear Velocity 1.5 ft/s / 0.5 m/s

Temperature -54°C/149°C to -65°F/300°F

This is used in combination with rod packing to absorb the impact and fluctuating pressures at high load, to isolate high temperature fluids, and to improve the durability of the packing. It has a special shaped slit at the sliding lip that can leak back pressure, and eliminates the pressure between the rod packing and the buffer ring. Used with general petroleum hydraulic fluid oil.

§ no adhesion effect on sliding surface § relieves any pressure build-up which may occur § superior abrasion and wear resistance


IDI Profile NOK IDI Type Asymmetrical Rod Seal The packing can be used for a wide range of pressures, and the packing material has excellent wear resistance for sealing ability.

Technical Data

Pressure (Typ.)4350 PSI / 30 Mpa

Pressure (with backup)10,150 PSI / 70 Mpa

Linear Velocity3.0 ft/s / 1.0 m/s

Temperature (Typ.)-35°C/100°C to -31°F/212°F

This packing material has excellent wear resistance and sealing ability. It has a large section, and can be used for a wide range of pressure. Used with general petroleum hydraulic fluid oil.


ISI Profile NOK ISI Type Asymmetrical Rod Seal This packing can be fitted into integrated groove. The material has excellent cold resistance, and can be used for special low temperature oil.

Technical Data


Pressure (with backup)5,800 PSI / 40 Mpa


Temperature (FKM) -30°C/100°C to -22°F/212°F

Temperature (Poly)-10°C/110°C to 14°F/230°F

This packing material has a small section than can be fitted into an integrated groove. Material with heat resistant U641 is also available. Used with general petroleum hydraulic fluid oil.


IUH Profile NOK NBR Asymmetrical Rod Seal with Relief Notch The packings can be fitted into an integrated groove, and improvement has been made to prevent the damages caused by back pressures.

Technical Data


Pressure (with backup)3050 PSI / 21 Mpa


Temperature (NBR) -55°C/80°C to -22°F/212°F

Temperature (low temp NBR) -25°C/100°C to 14°F/230°F

This is packing has a small section that can be fitted into an integrated groove. Improvement has been made to prevent the damage caused by back pressure. Nitrile rubber A903, which has excellent cold resistance, is also available, and can be used for special low temperature oil.

§ A505 is used with general petroleum hydraulic fluid oil, water-glycol type hydraulic fluid oil, and oil-water emulsion type hydraulic fluid oil.

§ A903 is used with general petroleum hydraulic fluid oil, and low temperature petroleum hydraulic fluid oil.


SPN Profile NOK Square Energized PTFE Rod Seal This packing has low frictional resistance, which eliminates stick slip and assures high wear resistance. This is used when the service range of pressure is wide and the sliding speed is high.

Technical Data



Temperature (NBR.)-40°C/100°C to -40°F/212°F

Temperature (FKM.)-20°C/160°C to -4°F/320°F

With the same performance as SPNO, this is used in case the service range of pressure is wide and sliding speed is high. The packing has low frictional resistance, eliminating stick slip and assuring high wear resistance.

§ A980 is used with general petroleum hydraulic fluid oil, water -glycol type hydraulic fluid oil, and oil-water emulsion type hydraulic fluid oil.

§ F201 is used with general petroleum hydraulic fluid oil, and phosphate ester type hydraulic oil.


SPNC Profile NOK O-Ring Energ. Low Profile Rod Piston Seal This packing has low friction resistance, which eliminates stick slip and assures high wear resistance. Installation space is saved by bi-directional sealing ability of single packing.

Technical Data





This packing can be fitted onto O ring groove, and has less sliding friction to assure high longevity. It can also be used for pneumatic equipment. It has low friction resistance, eliminating stick slip and assuring high wear resistance. Installation space is saved by bi-directional sealing ability of single packing.




SPNO NOK O-Ring Energ. Low Profile Rod Piston Seal This packing has low frictional resistance, which eliminates stick slip and assures high wear resistance. It's a standard combination seal and can be used for a wide range of operations.

Technical Data





This packing has low frictional resistance, eliminating stick slip and assuring high wear resistance. This is a standard type of combination seal and can be used for a wide range of operations.




UNI NOK O-Ring Energized Asym. Noxlan Rod Seal This packing is used for low temperature and high pressure operations. The back ring can prevent the lack of interference at low temperatures.

Technical Data


Pressure (w/Backup)6100 PSI / 42 Mpa


Temperature (Typ.)-45°C/100°C to -49°F/212°F

This packing is used for low temperature and high pressure operations. Noxlan is used for material, and back ring can prevent the lack of interference at low temperature. Uses general petroleum hydraulic fluid oil, and low temperature petroleum hydraulic fluid oil.