Cassette Seals

Short Description:

Cassette seals are used for fluid retention and extreme contamination exclusion in heavy duty applications operating in severe and harsh environments. The unitized design eliminates need for proper shaft surface finish and hardness.

Send email to us Download as PDF

Product Detail

Product Tags

Technical Specifications

Shaft diameter： 0.500 to 14.000 inch,10 to 350 mm

Polymer Material Options: Nitrile Rubber(NBR, XNBR).Fluorocarbon Rubber(FKM,FPM)

Minimum operating Temperature: -40 °F

Maximum operatingTemperature: 400(204 C) °F

Maximum shaft Runout: 0.010"

Maximum shaft-to-Bore Misalignment: 0.010”

Maximum operating Pressure: 0 to 7 psi

Maximum surface Speed: 2000 to 3200 (10.2 to16.3 m/s) ft/min

Seal Type: Metal or rubber-covered metal seal casing

Shaft Seal Material:Rubber

Item Information

Cassette seals (sometimes called hub seals) deliver durable reliability in demanding applications. These complex rotary shaft seals are used in heavy duty environments for fluid retention and exclusion of harsh contaminants. With a unitized method of construction, spring-loaded sealing elements ride on a self-contained internal wear sleeve surface. Multiple sealing contact points, as well as excluder lips may be integrated inside the wear sleeve surface and/or located on the OD. Designs with rubber covered metal OD casings provide improved sealing against the bore and are used for soft alloy housings.

Cassette seals from YJM are used in extreme conditions such as:
• Wash down applications on gear reducers used in food processing
• Mining, agriculture and power generation applications with severe environmental debris

YJM offers standard as well as custom cassette seal designs. Operating conditions and severity of the environment will dictate which design will meet your needs. Design options may include:
• Excluder lips for added protection against contamination and pollution, water spray and debris
• Patented axial face seal surface for dirt exclusion
• YJM sealant which fills small imperfections in the bore
• Rubber covered OD for improved sealing due to thermal expansion

Read More About cassette seals manufacturer

Standard Designs

CB Profile: Metal case with YJM bore sealant standard. Note: CB design requires special installation tool.
CL, CH Profile: Rubber covered OD for improved OD sealing and soft alloy housing.
Custom designs featuring additional or alternate sealing or exclusion contact points may be engineered for special conditions such as high misalignment, pressure or axial movement.

Typical operating ranges for standard designs

Standard Lip Materials:
NBR: Temp -20F / +250F
FKM: Temp -40F / +400F

Shaft Surface Speed: Up to 3200 fpm (16.3 m/s) depending upon pressure
Maximum Pressure: 0 to 7 psi (0 to 0.48 bar) depending on shaft speed
Size Range: 1/2 to 14 inches (10 to 350 mm)
Maximum Shaft Dynamic Runout (TIR): 0.010” (0.254 mm)
Maximum (STBM) Misalignment: 0.010” (0.254 mm)