Gaskets

KOK designs and manufactures gaskets for OEM customers where sealing performance must remain stable under mechanical load, thermal cycling, and long service life expectations.

Our gasket capability supports engine, powertrain, and mechanically loaded assemblies, including applications in automotive, heavy-duty, and agricultural diesel systems, where consistency at scale and long-term reliability are critical.

Application Context

KOK gaskets are developed for interfaces where sealing behaviour is governed by:

• Joint design and flange characteristics
• Clamping load and load distribution
• Thermal expansion and cycling
• Media exposure (oil, fuel, coolant, additives)
• Long production lifecycles and high cumulative volumes

These conditions demand more than material selection alone — they require controlled gasket construction and repeatable manufacturing.

Gasket Constructions & Sealing Interfaces

KOK manufactures a range of gasket constructions used in mechanically and thermally loaded assemblies, including:

• Engine head and cover gaskets
• Oil pan and housing gaskets
• Cylinder and combustion-related gaskets
• Ring gaskets
• Sheet gaskets
• Jacketed gaskets
• Solid gaskets

Each gasket construction is selected and engineered based on interface requirements and operating conditions, rather than catalogue convention. Our approach focuses on how the gasket behaves once installed — under load, over time, and across temperature cycles.

Materials & Composite Sealing Capability

KOK gaskets are produced using materials and composite constructions selected to meet defined mechanical, thermal, and chemical requirements.

Material options include:

• Elastomers
• Rubber-bonded metal
• Rubber-bonded plastic
• Graphite and other advanced sealing materials

Our expertise in rubber compounding and rubber bonding allows us to control compressibility, recovery, and long-term stability at the sealing interface.

Material and construction choices are driven by operating temperature range, media compatibility, required sealing pressure, and long-term dimensional and material stability.

Engineering & Development Capability

For OEM applications, KOK supports gasket development based on customer drawings, specifications, or defined functional requirements.

This includes:

• Selection of gasket construction and material system
• Definition of thickness and compression behaviour
• Interface compatibility with mating components
• Support during design refinement and validation phases

Development is approached with a focus on repeatability and lifecycle performance, not just initial sealing.

Manufacturing Control & Volume Consistency

OE gasket supply requires exceptional process discipline. KOK has invested heavily in precision manufacturing and testing processes to ensure tight control of thickness and dimensional tolerances, consistent bonding quality in composite constructions, and stable sealing behaviour across high production volumes.

Quality & Long-Term Supply Confidence

KOK gaskets are manufactured under controlled production systems designed to meet defined customer and OE requirements. Our quality approach prioritises consistency over time, reduction of production variation, and reliability across extended service intervals.

While selected gasket designs may be supplied beyond OEM channels, KOK’s core gasket capability is focused on OEM and high-volume production environments, where engineering discipline, material control, and manufacturing stability determine long-term success.