NJK PRO Sealing Technology

Manufactured to ISO 3601 international dimensional standards and available in NBR, FKM, silicone, and a wide range of compounds, our O-rings deliver reliable sealing performance under demanding temperature and pressure conditions.

Combining an elastomer sealing lip with a metal washer, our bonded seals are engineered for high-pressure piping and threaded connections, delivering secure and dependable leak prevention.

Engineered for automotive engines, our cylinder head gaskets withstand extreme temperatures and pressures while maintaining reliable combustion-chamber sealing. They help prevent engine oil and coolant leakage, supporting efficient performance and long-term engine protection.

Designed for dynamic sealing in rotary shaft and reciprocating applications, our oil seals retain lubricants while blocking dust and contaminants, helping protect critical components and extend drivetrain service life.

Developed from customer drawings or samples through OEM/ODM collaboration, our custom components offer one-stop support from tooling to compound formulation. We meet demanding tolerances and application requirements across medical, food-contact, and other regulated industries, with FDA-compliant material options available.