| Lip Style | "S"Single Lip with A Garter Spring.Generally used for sealing lower pressure applications. However, not recommended for use in applications where the surrounding environment contains any dirt or contaminants. | “T” Twin Lip with A Garter Spring.Generally used for sealing lower pressure applications. The additional dust lip provides increased protection for the primary lip. The cavity between the two lips can also be filled with grease to limit shaft corrosion and allow brief operation without media lubrication. | “V”Single LipGenerally used for sealing a non-pressure media, especially for sealing grease or viscous fluids. These seals are also used for dust or dirt exclusion. | “K” Twin LipAs type V above, but the additional dust lip provides increased protection for the primary lip. The cavity between the two lips can also be filled with grease to limit shaft corrosion and allow brief operation without media lubrication. |
OD Style | | Low-pressure single lip with garters pring without protection from contaminates. | Low-pressure dual lip with garters pring with protection from contaminates. | Non-pressure single lip without garters pring without protection from contaminates. | Non-pressure dual lip without garter spring with protection from contaminates. |
“C” Rubber Covered O.D.This type is preferred for soft alloy or plastic housing materials, as well as cast iron or steel. It is also more suitable to use this design in a replacement environment where minor damage to the housing surface has occurred. | Rubber cover OD for improving OD sealing ability. | SC  Low-pressure single lip with garter spring. Rubber covered OD to improve the OD sealing ability. Internal face of the steel case is not fully rubber covered. | TC  Low-pressure dual lip with garter spring provides protection from contaminants. Rubber covered OD to improve the OD sealing ability. Internal face of the steel case is not fully rubber covered | VC  Non-pressure single lip without garter spring. Rubber covered OD to improve the OD sealing ability. Internal face of the steel case is not fully rubber covered. | KC  Non-pressure dual lip without garter spring provides protection from contaminants. Rubber covered OD to improve the OD sealing ability. Internal face of the steel case is not fully rubber covered. |
“B”Outer Metal Case. This type is most suitable for steel or cast-iron housing materials. The metal case gives a particularly firm and accurate seat in the housing, but static sealing on the O.D. is partially limited. | Precision ground OD surface with a lead-in chamfer for ease of installation. | SB  Low-pressure single lip with garter spring. Precision ground metal OD with a lead-in chamfer for ease of installation. | TB  Low-pressure dual lip with garter spring provides protection from contaminants. Precision ground metal OD with a lead-in chamfer for ease of installation. | VB  Non-pressure single lip without garter spring. Precision ground metal OD with a lead-in chamfer for ease of installation. | KB  Non-pressure dual lip without garter spring provides protection from contaminants. Precision ground metal OD with a lead-in chamfer for ease of installation. |
“A ”Outer Metal Case with Reinforcing Plate.This type is designed with an additional inner case providing increased structural rigidity when a more robust design is required. Particularly suitable for larger diameters or when the seal is fitted from behind. | Precision ground OD surface with a inner case providing increased structural rigidity. | SA  Low-pressure single lip with garter spring. Precision ground metal OD with an additional inner metal case for increased structural rigidity. | TA  Low-pressure dual lip with garter spring provides protection from contaminants. Precision ground metal OD with a lead-in chamfer for ease of installation. | VA  Non-pressure single lip without garter spring. Precision ground metal OD with an additional inner metal case for increased structural rigidity. | KA  Non-pressure dual lip without garter spring provides protection from contaminants. Precision ground metal OD with an additional inner metal case for increased structural rigidity. |
“M”Outer Metal Case with Rubber LiningSimilar to design B but an additional rubber lining covering the internal face of the steel case. Particularly suitable for applications where corrosion could be a problem. | Precision ground OD surface with a lead-in chamfer with an additional inner rubber lining. | SM  Low-pressure single lip with garter spring. Precision ground metal OD with a lead-in chamfer for ease of installation. Internal face of the steel case is fully rubber covered to prevent corrosion. | TM  Low-pressure dual lip with garter spring provides protection from contaminants. Precision ground metal OD with a lead-in chamfer for ease of installation. Internal face of the steel case is fully rubber covered to prevent corrosion. | VM  Non-pressure single lip without garter spring. Precision ground metal OD with a lead-in chamfer for ease of installation. Internal face of the steel case is fully rubber covered to prevent corrosion. | KM  Non-pressure dual lip without garter spring provides protection from contaminants. Precision ground metal OD with a lead-on chamfer for ease of installation. Internal face of the steel case is fully rubber covered to prevent corrosion. |