Features

• The asymmetrical shape (crescent shape) sliding surface is given a special shape with texture and tapered land.
• The reduction of the outer circumference is reduced by reducing the rigidity due to the thinning of the cut section and the improvement of the expansion force by thickening the anti-cut part.
• The special shape of the sliding surface, textured and tapered, enables low torque.
• Durability is also improved by the formation of an oil film on the sliding surface.

Features

• We provide products that are integrally molded from rubber and low-friction materials to match the thermal management system (multi-flow channel switching valve).
• The unique shape provides high sealing performance and low torque, contributing to the miniaturization of the unit.
• It uses materials with excellent low-temperature properties, and the shaft rotation torque at low temperatures is also minimized.
• NOK’s unique analysis technology proposes the optimal sealing structure.

                                                           Disc Type

                                                          Rotor type

Features

1. Low temperature resistance, refrigerant resistance, and refrigeration oil resistance are all made of excellent rubber materials.

Specifications

Features

• It is an environmentally friendly material that uses plant-derived sustainable raw materials for the rubber material.
• Biomass EPDM materials are EPDM materials that have a biomass content of^＊1It is an eco-friendly material that has achieved 30%.
  * EPDM: Ethylene propylene rubber
• CO in polymers₂Reduced emissions by 40%.
  * CO during raw material manufacturing and transportation₂Emissions
• When biomass EPDM material is applied to general-purpose O-ring materials for water, they have the same characteristics as conventional EPDM materials.

                                                        CO₂Estimation of emissions (according to NOK research)

Specifications

Features

Features

• It is made of EPDM material that meets the flame retardant standard UL94 V-0.
  * EPDM = ethylene propylene rubber
• It contributes to the improvement of flame retardancy, which is required for electric vehicle units.
• Flame-retardant EPDM material can be used not only for O-rings but also for rubber materials such as gaskets.

Features

• Small-section and thin-walled shape design reduce tightness.
• Reduces the coefficient of friction by optimizing the surface roughness.
• A low-friction coating is applied to the sliding surface of the lip to reduce the coefficient of friction.
• The oil film is maintained with a high dynamic pressure effect by optimizing the roughness of the sliding surface.
• Further low friction is achieved by using low-viscosity grease that is compatible with oil seals.

Features

Features

• It is an oil seal that is resistant to foreign objects inside the machine.
• Stable sealing is ensured against high-frequency forward and reverse conditions.
• It uses a low torque clip that contributes to energy saving.
• It is made of rubber material with good wear resistance that contributes to improved durability.

                                           Environment Surrounding Oil Seals

Features

• Small-section and thin-walled shape design reduce tightness.
• Reduces the coefficient of friction by optimizing the surface roughness.
• A low-friction coating is applied to the sliding surface of the lip to reduce the coefficient of friction.
• The oil film is maintained with a high dynamic pressure effect by optimizing the roughness of the sliding surface.
• Further low friction is achieved by using low-viscosity grease that is compatible with oil seals.

Features

• By increasing the number of lips, the intrusion of muddy water and dust is suppressed.
• Uses abrasion-resistant rubber material, contributing to a longer life.
• Integrated structure provides easy replacement as a set and improvement of maintainability.
• Since the seal lip does not come into contact with the shaft, it is easy to control the condition of the shaft surface.

                                    Difference between Sleeved oil seal and general Oil seal

                                     Comparison with various Oil seal

Features

• By applying NOK’s original e-NF screws, it is possible to support high-speed main rotation direction and reverse rotation operation of e-Axle motors.
• The unique “TF Coat” coating reduces friction and sliding heat generation and improves fuel efficiency and electricity consumption performance.

Features

• Improves sealing performance at both high-speed rotations of the shaft.
• The new shape (VF screw) supports high peripheral speeds of 50 m/s in both forward and reverse directions.
• It has a high pumping capacity even during wear progression and exhibits excellent sealing properties.

                    The corresponding peripheral speed is about 2.5 times in both the forward and reverse directions

                                                      Comparison of pump volumes

                                              New Shape Pump Mechanism of Action

Features

• The shaft and housing are conducted, and electromagnetic noise generation due to charging of the shaft and electrolytic corrosion of the bearing part are suppressed.
• Compared to conventional structures (earth brushes, knuckle grounds, etc.), it is possible to save space and reduce costs.
• Conductivity can be ensured even in the dynamic environment associated with rotation.

                                                           Comparison with conventional structures

Features

• By capping (solidifying) the head of the product, the durability of the head is improved.
• By strengthening the adhesion between the colored urethane and the transparent urethane layer, the durability of the main body is improved.
• The brightness is improved by adopting a high-brightness prismatic reflective sheet.

                                                        Capping the head

                                                      Adhesion of colored urethane and transparent urethane layer

                                              Increased brightness of reflective sheets

Features

Features

• The integrated sensor enables simultaneous measurement of echo and electrocardiogram/electromyography.
• It can be monitored for a long time while being attached to the body.
• It has excellent flexibility and fits the curved surface of the body and is easy to wear.

Specifications

Features

Features

• Since it does not use conductive paste, there is no need to wash or wash your hair after electroencephalogram measurement.
• It can be used repeatedly, reducing the cost of wearable electrodes.
• It uses a conductive rubber electrode with excellent polarization voltage resistance.
• It can also be used for electrocardiographic electrodes for animals such as dogs and cats.

Features

• It can be used repeatedly for electrocardiogram, myoelectricity, and electrical stimulation, and is environmentally friendly.
• Because it is flexible, it is gentle on the “human body”.
• It can be cut to the desired size and is friendly to the “designer”.

Features

• It combines thermal conductivity and insulation and can be used around motors where heat dissipation is required.
• Since it can be molded with high precision, it contributes to weight reduction by replacing metal parts.
• Due to its high heat resistance, it can be used continuously in high-temperature environments (up to 220°C).

Features

Features

• It can be any shape that matches the shape of the heating element, and it exhibits performance equal to or better than that of a sheet with high thermal conductivity.
• Since it has electrical insulation and low outgassing, it can be used in the vicinity of electronic components.
• It solves problems such as the generation of air layers and the increase in man-hours, which are problems with general heat conductive sheets, gels, and greases.

Model: “QLEASE” clay type.

Features

Features

• The “QLEASE” series is a new concept of heat conductive material that improves heat transfer ease and adhesion.
• By utilizing the NOK technology that we have cultivated so far, we can efficiently transfer heat by eliminating the heat insulation layer of air between the heat source and the heat dissipation member as much as possible.

Specifications

Property	Rubber Type	Clay Type	Cross Type	Resin Type
Schematic Diagram
Hardness	Hard (Mid) Durometer A60	Soft (Low)	Soft & Hard (Low)	Hard (Hi) Rockwell R110
Thermal Conductivity	+	+++	++	++++
Adhesion (During Integral Molding)	++ ((+++))	+++	+++	+ ((++))
Ability	+++		+++	+++
Heat Resistance	+		++	+++

Features

• Unlike burst valves, they can be used repeatedly, eliminating the need for valve replacement.
• Since it can handle high pressure, it can meet the demands for high valve opening pressure.
• The valve is compact (valve diameter: φ6 and up), allowing the unit to be designed freely and requiring minimal space even when multiple units are used.
• Since it can seal gases, electrolytes, etc., it can be attached to battery cells and the opening pressure can be controlled.
• By using cold-resistant rubber in the valve section, changes in valve opening pressure are reduced even in low and high temperature environments.

                                                                             Unit design example

                                                                               Structural example

                                                                               Image of pressure release

Features

• Thanks to the built-in breathing membrane, the pressure inside the battery pack can be adjusted.
• Since the breathing membrane and exhaust valve are integrated, the battery pack can be designed compactly regardless of where it is installed.
• It meets IP67 and IPX9K waterproof and dustproof standards to prevent the ingress of water and dust from the outside, including water jets during car washing.
• Since it is equivalent to the flame retardant standard UL94 V-0, it ensures performance during thermal runaway.
• There is also a high-flow type with high gas emissions in an emergency, so it can be used for large battery packs.
• Since it uses a bayonet fixing mechanism, it can be easily installed with a single touch.

                                                                          Normal

                                                                           Emergency valve opening (cell ignition)

Features

• By controlling the rubber hardness and tightening allowance, it is possible to propose specifications according to the target valve opening pressure.
• We also have a lineup of EPDM materials equivalent to the UL94 V-0 flame retardant standard to ensure performance during thermal runaway.
• It can be fixed with a simple pinning, making the installation process easy.
• If desired, a resin cover specification corresponding to the high-pressure steam cleaning injection test IPX9K can also be set, and it can withstand high-pressure washing.

                                                             Normal

                                                            Emergency valve opening (cell ignition)

Features

• It has a simple rubber-only structure and can handle a flow rate of 150 L/min.
• By controlling the hardness and tightening allowance of the rubber, it is possible to propose specifications according to the target valve opening pressure.
• We also have a lineup of EPDM materials equivalent to the UL94 V-0 flame retardant standard to ensure performance during thermal runaway.

Simple structure consisting only of rubber umbrella valve

                                               Normal

                                          Emergency valve opening (cell ignition)

Features

• By controlling the diameter of the umbrella-shaped lid and the repulsive force of the spring, it is possible to propose specifications according to the target valve opening pressure.
• After the internal pressure is released, the valve is closed by a spring force to suppress the inflow of oxygen and prevent the spread of fire.
• The structure of the metal or resin umbrella-shaped lid held by a spring allows for high-pressure cleaning. (Waterproof and dustproof IP67 and IPX9K compliant)
• Since it is equivalent to the flame retardant standard UL94 V-0, performance can be ensured during thermal runaway.
• Depending on the choice of mechanism, it can be easily installed with a single touch.

                         Structure example: Image of pressure relief

Features

• Its thin and flexible wiring allows for space-saving wiring.
• It has excellent flexibility and flexibility, making it ideal for three-dimensional wiring and folding wiring.
• It has high heat resistance and can be used stably even in high temperature environments (up to 150°C).
• The integration of the board and wiring reduces the number of components and assembly costs.

Features

Features

• Three grades are available according to the operating temperature.
• It can withstand up to 150°C.
  * If you have a request of 150°C or higher, please contact NOK or Mektech.
• It has a wealth of experience in use in the automotive industry, which has strict heat resistance requirements.

                             Comparison of specifications of 3 grades according to the operating temperature

                                     Tear strength of cover film after 105°C air heating degradation test (N/mm)

                         Tear strength of cover film after 150°C air heating degradation test (N/mm)

Thermal Aging Data (Initial vs After 3,000 Hours)

Features

Features

Features

Features

Features

• Since it is thinner than conventional wiring, it contributes to miniaturization and space saving of electronic devices.
• Due to its flexibility and flexibility, it is also suitable for three-dimensional wiring and collapsible wiring.
• Due to its heat resistance, it can be used in high-temperature environments (~150°C)
• The integration of the board and wiring reduces the number of components, assembly costs, and weight reduction.

Features

• It can be used by simply attaching a disposable urination detection sensor (sensor sticker) to the diaper.
• Reduce labor costs with automated checks and records.
• Accurate detection of urination prevents leakage into clothing and improves the user’s QOL by enabling a good night’s sleep.

Features

• The integration of rubber/elastomers with flexible printed circuit boards (FPCs) reduces the number of components.
• It reliably seals and protects the wiring of flexible printed circuit boards (FPCs).
• From our extensive lineup of materials, we propose materials that meet the required functions.
• We produce everything from flexible printed circuit board (FPC) manufacturing to rubber molding.
• We are capable of precision molding cultivated in products for small electronic devices.

Specification

〇: Resistant △: Not resistant except in certain cases ×: Not resistant

Features

• It is less likely to absorb odors, so you can expect to wash it less frequently.
• It is less likely to wear out, so you can expect to have to replace it less frequently.
• It is resistant to a variety of cleaning agents and can be used repeatedly.

Specifications

• The above evaluation is based on our tests and does not guarantee actual usage conditions.
  Evaluation by compression set
  Care must be taken when cleaning at high temperatures and high concentrations. Please contact us separately.

Features

• NOK’s unique gasket with integrated insulating flow path plate and seal makes membrane replacement easy and easy to maintain.
• The integrated gasket simplifies stacking and significantly reduces component count.
• When the pressure of the rubber is applied to the pressure of the sealing surface, a self-sealing mechanism acts to ensure the sealing performance at high pressure.