Oil Seals DC

DC seals are sealing elements with two oppositely oriented lips, designed for applications requiring bidirectional sealing or complete protection of the oil and the external environment. The DC (double contact or double lip) design ensures oil retention and the exclusion of contaminants using a single component. They are recommended for industrial applications, heavy-duty transmissions and equipment exposed to aggressive environments. The Hydraulic Seals Store catalogue features DC oil seals made from NBR and FKM, with fast delivery in Romania.

Features of DC oil seals

A solution for applications with special sealing requirements

The two lips of the DC seal have distinct functions: the primary lip retains oil, whilst the secondary lip protects against contaminants. The space between the lips can be filled with grease for lubrication and additional protection.

Effective protection against leaks and contaminants

The DC oil seal provides a more complete seal than the A oil seal, without significantly increasing the complexity or cost of the assembly. It is recommended for applications with harsh environmental conditions or where additional protection of the bearings is required.

Applications for DC seals

• industrial and automotive transmissions;
• hydraulic and pneumatic pumps;
• gearboxes exposed to dust or moisture;
• agricultural and construction equipment;
• electric motors and process equipment.

See also A and V-type oil seals and pressure seals for other sealing solutions for rotating shafts.

Selection criteria

When selecting a DC lip seal, check the shaft diameter, the outer diameter of the housing, the width and the material of the lips. The operating temperature and the type of fluid determine whether to choose NBR or FKM. The permissible rotational speed is also an important parameter.

Advantages of buying DC seals from the Hydraulic Seals Store

Hydraulic Seals Store offers DC seals from stock, in various sizes and materials, at competitive prices, with fast delivery in Romania. Orders can be placed online, and our team is available to provide technical support. Purchase high-quality DC seals at an affordable price, directly from the catalogue.

Frequently Asked Questions

What applications require the use of DC seals?

DC oil seals are used in applications requiring both internal oil sealing and protection against external contaminants, using a single component. They are suitable for transmissions, pumps and gearboxes exposed to contaminated environments.

How do DC oil seals differ from standard oil seals?

DC oil seals have two sealing lips: one for retaining oil and one for keeping out contaminants. This design provides complete protection with a single component, eliminating the need for two separate oil seals.

How do you choose the right DC oil seal for a rotating shaft?

Choose the DC oil seal based on the diameter of the shaft, the housing and the required width. Select the material (NBR or FKM) according to the temperature and type of fluid. Also check the maximum permissible rotational speed.

What technical parameters are important for DC seals?

The essential parameters are the internal diameter, external diameter, width, lip material, maximum operating temperature and maximum shaft rotational speed.