Pressure oil seal 45x68x12 TCN AP2668G NBR

Pressure oil seal with dimensions 45x68x12 mm, type TCN (manufacturer code DMHUI: AP2668G), designed for applications operating under elevated working pressure. This product is a direct equivalent of the NOK seal with the identical catalog designation.

Seal Profile Design

The TCN profile features a specialized construction engineered for high-pressure environments, such as hydraulic pumps and hydrostatic motors. The design consists of a metal reinforcing cage fully rubber-lined with NBR (Nitrile Butadiene Rubber) and a primary sealing lip energized by a garter spring. A key structural feature is the integrated support ring positioned behind the sealing lip, which prevents lip deformation and inversion under fluid pressure. The profile also includes a secondary dust lip to protect the system against external contaminants.

Technical and Dimensional Data

• Inner diameter (d): 45 mm
• Outer diameter (D): 68 mm
• Height / thickness (H): 12 mm
• Type / Profile: TCN (Pressure Oil Seal)
• Material: NBR (Nitrile Butadiene Rubber)
• Manufacturer: DMHUI
• Country of origin: China
• Product code: 1903013
• SKU: 8890
• Cross-reference / Equivalent: NOK AP2668G

Application and Operating Conditions

This seal is primarily used in fluid power applications and hydraulic systems, offering resistance to mineral oils, greases, and hydraulic fluids. Due to the TCN profile design, the oil seal maintains its dimensional stability and sealing performance under higher pressure loads compared to standard rotary shaft seals.