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RIS Seal Brochure

RIS Seal Brochure

Product catalog summary

Overview: The RIS seal is a non-clogging component seal designed for challenging slurry applications. It features a stationary seal face attached to a flexible rubber element, which maintains seal integrity and absorbs shaft movement during pump operation.

Features and Benefits:

Non-clogging design enhances Mean Time Between Failures (MTBF) by utilizing a rubber in shear component.
External adjustments allow for minor seal wear compensation without disassembling the pump, accommodating pump misalignment.
Absence of dynamic gaskets prevents seal face hang-ups, further extending MTBF.
Factory and field tests ensure consistent performance in hard slurry conditions.
No flush required due to controlled slurry composition, reducing water and energy costs.
Minimized process leakage decreases water disposal issues, packing sleeve wear, and bearing failures.

Materials of Construction:

Stationary Assembly: CD-4MCu and Alloy C-276
Other Parts: AISI 316, CE-4MCu, and Alloy C-276
Seal Faces: Silicon Carbide or Tungsten Carbide
Elastomers: Bortex I* Rubber in Shear Element, O-rings Ethylene-Propylene

Design and Installation: The RIS seal's unique design eliminates the need for springs or bellows, allowing installation from the pump's wet-end and external adjustments. It can be reset automatically during impeller clearance adjustments in many pump designs.

Operating Parameters:

Maximum Static Pressure: 300 psig (2062 kPa) at ambient temperature
Minimum Seal Chamber Pressure: 5 psig (35 kPa)
Recommended Tapered Angle for Seal Chamber: 10° to 30°
Suitable for water-based slurries with particle hardness up to 5.0 MOH (Tungsten Carbide) or 7.0+ MOH (Silicon Carbide)
Operates in pH levels from 2-14
Shaft size: Up to 9-1/4 inches (234.7mm)
Surface speed: up to 35 ft./sec. (11 m/sec.)

Applications: The RIS seal is applicable in various industries such as power, ore processing, phosphate chemical, alumina, and iron ore, with specific seal sizes and operating conditions tailored to each application.

Contact Information: Flowserve Corporation provides contact details for regional offices in the USA, Europe, Asia Pacific, and Latin America for further inquiries and support.

RIS Seal Brochure

RIS Seal Brochure

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