Standard Rotary Shaft Oil Seals

KOK supplies a comprehensive range of standard type rotary shaft oil seals for aftermarket applications across automotive, motorcycle, and general industrial markets.

Our standard oil seals are manufactured in accordance with DIN and JIS design standards, ensuring dimensional compatibility and interchangeability with widely used industry seal profiles.

Contents

• Standard Seal Types & Profiles
• Materials & General Specifications
• Size Coverage & Range Availability
• Manufacturing & Supply Consistency

Standard Seal Types & Profiles

We manufacture all commonly used rotary shaft oil seal configurations, including single-lip and double-lip designs, with metal-cased or rubber-covered constructions. Common standard types include:

TC, SC, DC, KC, VC, KA, OC, OV, OA

For example, TC-type seals combine a primary sealing lip with an auxiliary dust lip, with the metal insert fully bonded in elastomer to improve sealing reliability and corrosion resistance. These profiles are widely used across passenger vehicles, motorcycles, and light industrial equipment.

Materials & General Specifications

Our standard rotary shaft oil seals are produced using proven elastomer compounds commonly specified for aftermarket applications.

• Available Materials: NBR, ACM, HNBR, VMQ (Silicone), FKM, XNBR, AEM

Material selection depends on operating temperature, lubricant type, and environmental exposure.

Size Coverage & Range Availability

KOK supports a broad range of shaft diameters suitable for aftermarket demand, covering the vast majority of automotive and powersports applications.

With over 60,000 rotary shaft oil seal part numbers, we offer extensive catalogue coverage, enabling aftermarket customers to source a complete and consistent seal range from a single supplier.

Min/Max Size: 2.5mm - 2,000mm

Manufacturing & Supply Consistency

All tooling is developed in-house, allowing us to maintain dimensional consistency, stable quality, and long-term supply continuity across standard seal types.

Where required, standard profiles can be adapted within defined limits to meet specific aftermarket requirements while maintaining compatibility with existing housings.