K-DGS Dry Gas Seal

Patented Tapered Lift Ramp Geometry

At the heart of every K-DGS is the lift ramp geometry to generate and maintain lift force and clearance between the rotating and stationary seal faces. Kaydon's patented Tapered Lift Ramp geometry causes an increase in velocity of the seal gas as it moves through the ramp, sweeping contamination away from the sealing faces. (Other dry gas seal designs with constant depth geometry

Features and Benefits

Lowest leaking gas seal type available for turbo machinery
Various configurations are available to fit the application: tandem, tandem with intermediate labyrinth, single, double
Patented Tapered Lift Ramp geometry generates lift with rotation and expels contamination
Bi-directional seals are available to provide protection during reverse rotation, and to limit spares inventory Silicon carbide rotating seal faces are used as standard to increase durability during incidental contact caused during startups, shutdowns, and other transient conditions
Factory leak tested at application speeds, pressures, and temperatures
May be combined with K-CBS separation seal for single DRYPLEX™ cartridge assembly

Applications

Natural gas transmission
Pipeline booster compressor shaft seals
Natural gas and CO2 re-injection compressor shaft seals Natural gas mid-stream processing plants
Propane refrigeration, Ethylene refrigeration, Propylene refrigeration, sales gas, raw gas, treat gas,
residue gas compressor shaft seals
LNG refrigeration and boil-off compressor shaft seals Refinery
Hydrogen recycle, platformer, reformer, hydrotreater, wet gas, coker, alkylation, isomerization, flare gas recovery
Petrochemical
Ethylene, propylene, polypropylene, charge gas, propane refrigeration, iso-butane, ethylene oxide, styrene off-gas, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polyethylene, carbon monoxide, methanol, synthesis gas, ammonia refrigeration, acetylene, feed gas