Mechanical seal ISCK725

Technical Data Mechanical seal IS5281

Temperature Limits -40°F to 392°F/-40°C to 200°C
Pressure Limits Vacuum to 16 bar(g)
Dry-running variant up to 6 bar(g)
Speed Limits 400fpm/2m/s
Dry-running variant: 300fpm/1.5m/s
Size Limits 40mm to 160mm

Brand

KSB

Mixer and Agitator Cartridge Seal to Vessel Seal Standard DIN 28138 for Steel Chemical Reaction Vessels — No Bearing Integrated – is725

The isCK 725 is a dual-pressurized, liquid-lubricated cartridge seal for top-entry mixing and agitating equipment. A value-engineered design, high level of standardization and broad material options make this seal a cost-efficient solution for general-duty applications in the chemical and pharmaceutical industry. Standard versions are compliant with vessel seal standard DIN 28138 Parts 1 and 3. They are designed for use on steel-made agitated chemical reaction vessels to DIN 28136, to fit on a mounting flange to DIN 28141 and agitator shaft end dimensions to DIN 28154. Hardware adaptations to fit to non-DIN equipment are available on request.

By exchanging the seal faces, a isCK 725 wet seal can easily be converted to a contacting, dry-running seal. Type name then changes to isCK 725D. Advantages of contacting dry running seals include freedom from contamination by barrier liquid and a low face wear rate, together with a cost-efficient, easy-to-install (gas) supply system. To simplify inventory, seal components are standardized with the other seal types of this family isCK 726(D) and isCK 736(D).

The seal is suitable for operation in potentially explosive atmospheres. Depending on individual explosion protection requirements, the seal operating limits may differ from the values given in the parameters section. Furthermore, additional monitoring devices may be required.

For undemanding applications, the wet seal versions can be operated without pressurizing the barrier liquid. Please consult iseal

Product Description ISCK725

roduct Description is725

Type isCK725 and Type isCK726 vessel and agitator seals are dual cartridge seals compliant with vessel seal standard DIN 28138 Parts 1 and 3. They are designed for use on agitator vessels made of steel to DIN 28136, to fit on a mounting flange to DIN 28141 and agitator shaft end dimensions to DIN 28154. A cartridge integrated radial bearing for optimal shaft alignment distinguishes Type isCK726 from Type isCK725. Both liquid lubricated and dry running versions are available. All versions are suitable for operation in potentially explosive atmospheres. Depending on individual explosion protection requirements, the seal operating limits may differ from the values given in this data sheet. Consult iseal for more information

Applications

Mixer and agitators
Other rotating equipment

Features isck725

California Residents: PROPOSITION 65 WARNING
Dual-cartridge seal without bearing to DIN 28138 for stainless steel vessels.
Fits mounting flange to DIN 28141 and shaft ending to DIN28154.
Back-to-back seal arrangement with unbalanced faces.
Reversed pressure capabilities inboard.
Liquid-lubricated (ISCK 725) or dry-running (ISCK 725D) face versions available.
Non-standard sizes, special designs and material options are available on request.
Debris well and cooling flange options available.
Suitable for application in explosive areas. Certificates of conformity according to European Directive 94/9/EC (ATEX) Cat. 1, 2, or 3 on request.
Limits of operation without pressurized barrier fluid are available upon request