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Cartridge mechanical seal 285
springbellowsfor cryogenic pumps

cartridge mechanical seal
cartridge mechanical seal
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Characteristics

Type
cartridge, spring, bellows
Applications
for cryogenic pumps, for shafts
Material
stainless steel, carbon
Other characteristics
gas-lubricated
Operating pressure

Max.: 7 bar (102 psi)

Min.: 0 bar (0 psi)

Description

Gas-lubricated, Non-contacting Single Seal For Cryogenic Pumps Unique Spiral Groove Technology As the worldwide leader in spiral groove technology, John Crane is the first to utilize non-contacting seals in cryogenic applications. The Type 285 can safely seal the most common industrial liquid gasses, such as liquid nitrogen, oxygen, argon and carbon dioxide. It fits the most popular cryogenic pumps — site-based and road tanker pumps — and meets liquid oxygen (LOX) safety standards. The John Crane spiral grooves enable the seal to operate on a gas film by gathering and compressing the vaporized liquid. As the gas is forced towards the closed groove ends, the pressure rises, which creates a cushion to separate the sealing faces. Since the seal faces do not contact, dry-running and face wear problems, which are associated with conventional contacting seals, are virtually eliminated. Features California Residents: PROPOSITION 65 WARNING Specially designed stationary edge-welded metal bellows. Available in flanged, right- and left-hand threaded designs or as a cartridge. Meets liquid oxygen (LOX) safety standards. Anti-spark sleeve and retaining ring. Reduced power consumption with minimal product loss. Since the seal faces do not contact, dry-running and face wear problems, which are associated with conventional contacting seals, are virtually eliminated. The design and materials of construction meet the industry safety requirements, allowing the Type 285 to seal all of the common industrial liquid gasses including oxygen, nitrogen and argon.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.