TOLL FREE: 1.877.243.7325 · E-MAIL
HOME > DURASHIELD SEALS > LD SERIES
 
image-1
The Durashield LD Series seals are a cost effective solution which virtually eliminates shaft leakage and extends bearing life. Our efficient design can drastically reduce on-site maintenance costs and loss of process materials. This design is widely used throughout the Food and Pharmaceutical industry for sealing Screw Conveyors, Bucket Elevators, Mixers, Screw Feeders and Crushers in non-weight bearing applications.

Air purged operation allows for reduced internal drag, cooling and increased sealing capabilities. The LD series seals are ideal for processing bulk materials at lower temperature and speeds.

• Standard production shaft sizes: 1.50” to 3.437” (metric sizing available)
• Easy installation & Setup
• Cost Effective Solution

• LD Series assembly & install guide download
• Technical specs & size download
 


 
TECHNICAL SPECIFICATIONS:
• Operating Temperature: -60˚F to 250˚F
• Pressure Holding: 20 psig.
• Vacuum Holding: 10 inHG
• Air Purge Connection Start Pressure: 15-20 psig.
• Typical Air loss: 1.5 - 2.0 SCFM
• Maximum Shaft Run Out. .250" TIR.
• Stuffing Box Misalignment: .015 TIR per inch of shaft
• Shaft Growth: ± 1/16”
• Shaft Tolerance: ± 1/16”
• Max. Out of Square Mounting Deviation: 1°
• Standard Seal Thickness: 1.75"
• Minimum Available Seal Thickness: 1.75”
• Housing Material: HDPE
• Wear Ring Material: 304 Stainless Steel
• Wear Plate Material: PTFE
• Elastomer: EPDM-Silicone (FDA Compliant)
• Bolt Torque for seal mounting: 30lbs
• Shaft Speed Capability: Variable by shaft diameter


SHAFT DIA
-A-
Housing
-B-
Bolt Sq. Max
-C-
Bolt Sq. Min
-D-
Slot Width
-E-
Elastomer Adjust
-F-
Air Connect
-G-
Seal Width
-H-
1.50"
5.50"
4.25"
4.00"
.66"
3.82"
3.82"
1.75"
2.00"
6.50"
5.13"
4.25"
.66"
4.00"
4.41"
1.75"
2.44"
7.50"
5.88"
5.38"
.68"
5.56"
4.94"
1.75"
3.00"
8.00"
6.13"
5.88"
.80"
5.72"
5.19"
1.75"
3.44"
9.25"
7.48"
6.17"
.80"
6.75"
5.85"
1.75"

LD Series seals are dimensionally configured for type E and SCM medium duty 4-bolt flange bearings.
Dura-Shield seals are also available for heavy duty RB end thrust bearings.