Type SEW

Garnitures mécaniques simples pour pompes de process Sulzer

Type SEW is a seal operating on a non-pressurized water quench principle. It is designed for the most demanding applications in the pulp industry, where reliable and long-lasting operation is required from a seal. Typical applications include stock pumps at pulp mill washing and screening facilities, as well as high-temperature condensate pumps.

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Caractéristiques
Paramètres
Applications recommandées
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Caractéristiques

California Residents: PROPOSITION 65 WARNING
Balanced design — undisturbed operation even with sudden pressure shocks.
Heat shrunk seal faces — ensures correct face alignment at all temperatures recommended for this seal.
Spring located in a stationary body — shaft misalignment does not pump up the spring or wear out the O-ring.
Installation against the shaft shoulder — easy installation reduces risk of human error. No measurements required for installation.
No drive pins at seals — seal face does not crack at start-up.
Available in different materials — selection covers all possible single-seal applications.
Non-pressurized seal water quench — possible to cool seal with non-pressurized seal water at high temperatures. A V-ring prevents water leakage from the seal.
By using a Sulzer Scanpump cartridge tool, the seal becomes a true cartridge seal.
Available with grease lubrication — the Safeseal Type SEW can be used with grease quench to save seal water.

Paramètres

Limites de température: 300 °F/150 °C
Limites de pression: Pression du processus : 215 psi(g)/15 bar(g)
Limites de vitesse: 65 pi/s/20 m/s
Matériaux standard: Faces de la garniture : SiC/Carbone ou SiC/SiC
Joints toriques : PTFE, EPDM, Viton
Métaux : AISI 329 (standard), titane, UHB
Ressorts : Acier Nimonic
Standard Materials: V-ring: Nitrile