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Face Seal NS-DF-4

 
Face Seal NS-DF-4

Face Seal NS-DF-4

NS-DF-4 serves as the third largest of the face seal standard line, with the ability to also function as a thrust bearing. Through the use of our Externally Pressurized Porous Media, these robust seals offer a non-contact, leak-free solution without the hassle of routine maintenance. Adaptive hardware is available making New-Seal™ face seals easy to retrofit into existing equipment.

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Units: US METRIC
TitleSpecifications
Model #NS-DF-4NS-DF-4
Min. Shaft Size2.99 in.76 mm
Max. Shaft Size4.02 in.102 mm
Outside Diameter7.01 in.178 mm
Axial Height1.93 in.49 mm
Radial Runout0.13 in.3 mm
Cavity Pressure45 psi3 bar
Max. Angular Misalignment2.5°2.5°
Porous Media MaterialCarbon GraphiteCarbon Graphite
Housing Material316 Stainless Steel, FDA Compliant Materials Available316 Stainless Steel, FDA Compliant Materials Available
O-ring MaterialsFluoroelastomer Fluoroelastomer

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