NOK seal types

SC

SB

TC

TB

TCK

VC

VB

KC

KB

TCV

TCN

TCZ

TC4

TB4

NOK Type SC Oil Seal – For Dust-Free Applications
Designed for environments requiring clean, dust-free operation, the SC Type Oil Seal effectively seals fluid on one side. Ideal for applications with low-pressure conditions, it operates at a maximum pressure of 0.03MPa (0.3kgf/cm²). Its simple, reliable structure offers excellent resistance to lubricant leakage and protects against mild contamination, making it a cost-effective choice for non-dusty, lightly loaded rotary equipment.

NOK Type SB Oil Seal – For Dust-Free Applications
The SB Type Oil Seal is engineered for dust-free environments where fluid needs to be sealed on one side. With a maximum operating pressure of 0.03MPa (0.3kgf/cm²), it offers reliable performance in low-pressure systems. This single-lip design is cost-effective and simple to install, providing effective sealing in clean conditions without abrasive contaminants. Ideal for lightly loaded rotary shafts, the SB type ensures minimal oil leakage and long-lasting performance in controlled environment

TC Type Oil Seal – For Dusty Environments
The NOK TC Type Oil Seal is designed for applications requiring dual protection—sealing fluid on one side and resisting fine dust on the other. With a maximum pressure capacity of 0.03MPa (0.3kgf/cm²), it features a double-lip design that combines efficient oil retention with enhanced dust exclusion. Ideal for use in light-duty, dusty environments, the TC seal ensures reliable performance, prolongs equipment life, and minimizes contamination risks in rotating machinery and automotive systems.

TB Type Oil Seal – For Dusty Environments
The NOK TB Type Oil Seal is a robust solution for applications where fine dust is present on one side and fluid needs to be sealed on the other. With a maximum operating pressure of 0.03MPa (0.3kgf/cm²), it features a double-lip structure similar to the TC type, offering enhanced sealing performance. The TB type is designed for rotating shafts exposed to light contamination, ensuring reliable dust resistance and fluid retention. It is widely used in industrial machinery and automotive components requiring consistent, long-term protection.

TCK Type Oil Seal – For Coarse Dirt and Sand
The NOK TCK Type Oil Seal is designed for harsh environments with coarse dirt, sand, or heavy dust exposure. Operating at a maximum pressure of 0.03MPa (0.3kgf/cm²), it offers the same fluid and dust sealing functions as TC and TB types but with enhanced performance. Its dust lip is made from a NOK-developed special fabric, delivering superior dust resistance and air permeability while reducing friction. Ideal for outdoor or off-road applications, the TCK type ensures long-lasting reliability in challenging conditions.

VC Type Seal – Grease or Dust Applications Only
The NOK VC Type Seal is designed specifically to seal in grease or keep out dust in non-pressurized environments. It is not suitable for use under pressure but performs effectively as a secondary seal when used in combination with S-type oil seals. Ideal for applications requiring additional protection against contamination, the VC type offers simple, reliable sealing in dry or lightly lubricated conditions—commonly used in bearing housings, light machinery, and auxiliary sealing roles.

VB Type Seal – Grease or Dust Protection Only
The NOK VB Type Seal is intended for use in non-pressurized environments where its primary role is to retain grease or exclude dust. Not suitable for pressure applications, it is often paired with an S-type oil seal to enhance overall sealing performance. The VB type is a simple and cost-effective solution for secondary sealing in applications like light machinery, bearing protection, and dust-exposed assemblies, offering reliable contamination control and extended equipment life.

KC Type Seal – Grease Seal for Dusty Environments
The NOK KC Type Seal is designed to retain grease in applications where light dust exposure is present. Not suitable for pressure applications, it provides reliable sealing in non-pressurized systems where moderate dust exclusion is required. Ideal for use in agricultural, construction, or light industrial machinery, the KC type can also be used in combination with two V-type oil seals for enhanced protection. It’s a practical, durable option for extending equipment life in mildly contaminated environments.

KB Type Seal – Grease Seal for Dusty Environments
The NOK KB Type Seal is designed to retain grease in low-dust, non-pressurized environments. It offers reliable protection where light contamination is present and cannot be used in pressure applications. Often used in conjunction with two V-type oil seals, the KB type enhances sealing performance in rotating equipment exposed to minor dust ingress. Ideal for agricultural, light industrial, and construction machinery, it helps maintain lubrication and extend component life in mildly dusty conditions.

TCV Type Oil Seal – For Pressurized Applications
The NOK TCV Type Oil Seal is engineered for medium-pressure rotating shafts, offering enhanced sealing performance through increased lip rigidity. Suitable for small-diameter applications, it is a pressure-resistant design ideal for more demanding conditions. Refer to pages catalogue for specific allowable pressure limits. The TCV type is commonly used in hydraulic systems, pumps, and other equipment requiring reliable fluid retention under moderate pressure while maintaining durability and efficiency.

TCN Type Oil Seal – For High-Pressure Applications
The NOK TCN Type Oil Seal is a pressure-resistant solution designed for high-pressure rotating shafts. Building on the TC structure, it features increased lip rigidity and an auxiliary cage that helps minimize lip deformation under load. This ensures consistent sealing performance even in demanding environments. Ideal for hydraulic equipment, pumps, and pressurized rotating systems, the TCN type delivers reliable fluid retention and extended service life under tough operating conditions.

TCZ Type Oil Seal – For High-Pressure Applications
The NOK TCZ Type Oil Seal is a pressure-resistant solution designed for high-pressure rotating shafts. Building on the TC structure, it features increased lip rigidity and an auxiliary cage that helps minimize lip deformation under load. This ensures consistent sealing performance even in demanding environments. Ideal for hydraulic equipment, pumps, and pressurized rotating systems, the TCN type delivers reliable fluid retention and extended service life under tough operating conditions.

TB4 Type Oil Seal – For High-Pressure Applications
The NOK TB Type Oil Seal is a pressure-resistant solution designed for high-pressure rotating shafts. Building on the TC structure, it features increased lip rigidity and an auxiliary cage that helps minimize lip deformation under load. This ensures consistent sealing performance even in demanding environments. Ideal for hydraulic equipment, pumps, and pressurized rotating systems, the TCN type delivers reliable fluid retention and extended service life under tough operating conditions.