The NVS-4 carbon floating ring seal features a unique overlapping mortise design. The sealing ring provides an inward contraction of the inner bore. Radial springs maintain effective contact between the sealing ring and shaft surface.
The split seal housing allows installation and replacement without disassembling the bearing housing. This design also helps achieve low leakage rates during operation.
The carbon rings operate in contact with the shaft, resulting in normal wear. The NVS-4 is mainly used in gas handling equipment for steam, oil and gas, and wet gas applications.
NVS-4 can be used as a direct alternative to the Burgmann WD500 type.
It can be used in combination with NVS-1, NVS-2, and NVS-3.
It can be paired with the API 682 Plan 74 system designed and manufactured by Novseal.
Features
Split-type housing structure
Multi-segment carbon rings with overlapped
Extremely small operating clearance for minimized leakage
Non-contact, dry-running operation
Seal rings automatically adapt to operating conditions
Benefits
Simplified installation due to split housing design, eliminating the need for shaft disassembly
Extended service life under continuous operation
Easy maintenance and servicing
Segmented seal rings allow quick and convenient replacement
