NVS-7 is an ultra-narrow carbon floating ring seal, dry-running ,designed for installation in confined spaces.It mainly consists of an end cover, a shaft sleeve, and carbon rings.It features radially split, multi-part seal rings and a split housing design.Self-adjusting sealing rings.The ultra-small operating gap delivers low leakage.Carbon floating ring seal solutions like NVS-7 are widely applied in compressors, turbines, and other rotating machinery.Can be used as a replacement for Burgmann Espey WDKS-Eco type.
Carbon floating ring seal
NVS-7|Carbon floating ring seal|Replacing EagleBurgmann WDKS-Eco
Pressure: 0~1.5bar
Temperature: -100~500℃
Speed: ≤150m/s
Shaft size : 45~160mm
Radial play: ≥±2.5 mm
Axial movement: theoretically unlimited
Metal parts: 2Cr13,304,316L
Seal ring: Carbon, PTFE compound
Elastomer ring: FKM,EPDM,PTFE,FFKM
Spring: 316L,Hastelloy C
Features
Multi-part seal rings, radially cut
Split housing design
Very small operation gap – low leakage
Dry running
Self-adjusting seal rings
