AS-AT151 agitator seal

Operating Limits

 • Temperatures:-25°C to +230°C/ -15°F to +445°F depending on materials used

 •Pressures:Full vacuum to 41 bar g/600 psig depending on shaft size end clamp design

 • Speeds:Up to 1000 rpm

Description：

AS-A151 is a universally applied, PTFE wedge, vessel cartridge seal with concentric sealing faces &  top entry  access. The Type are used on mixing vessels, including enamelled vessels, with top, bottom, or side entry shafts.

Features：

• AS-A151 seals are designed to run with an externally supplied sealant circulation to provide cooling and good sealing effects for many kinds of liquids and vapours.

• Hydraulic balance  Design of the seal face allows for seals usage at higher pressures.

• Cartridge Arrangement makes easy replacement of each part of the seals possible

• Rotating Seat Arrangement allows for a big tolerance in the accommodation of radial shaft movement, and also prevents secondary seals from high shaft temperatures.

• Short axial length of the seal permits a shorter shaft length, enabling it to suit many kinds of vessels.

• No separate seal housing is required.

Applications：

Ideal suited for general chemical applications including chemical processing,  biotechnology,food processing, ink & paint. Also it is an ideal solution for petrochemical processing and pharmaceutical industries, highly corrosive fluids and high temperatures.

About Us：

Asinoseal is a mechanical seal manufacturer integrating production and marketing.Our business varieties include Spring/ bellows/cartridge/split/agitator mechanical seal, etc,dry gas seals as compressor seal are also being developed. Not only the superior products such as agitator seals have been widely recognized internationally, but also the component seal and even the seal material are famous at home and abroad. They are all waiting for you to choose & buy！

Background Knowledge：

How to select mechanical seals for high viscosity media

In selection of mechanical seals,high viscosity media such as grease, sulfuric acid, gear oil, cylinder oil, styrene, silicone oil, residual oil have their own specific standards.

This fact is decided by the following features of these media: when viscosity is moderately high,lubricating performance is good, but if viscosity is too high, floating of rotary face will be affected and transmission torque of spring will be increased.That’s because it is difficult to form a liquid film between sealing surfaces and sealing performance  will be harmed When viscosity is too high.

These features imply the following requirements for mechanical seals: Friction pair material is wear-resistant, and spring must have enough ability to overcome resistance caused by the high-viscosity medium , and sealing chamber is required to be kept warm or heated to avoid increase of viscosity of the medium caused by low temperature of the sealing chamber.

The requirements are manifested in selection of mechanical seals as follows: 1. For medium with general viscosity, when p≤0.8Mpa, use a singl unbalanced mechanical seal;When p>0.8Mpa, a balanced mechanical seal is used. When viscosity of the medium is 700-1600Mpa.s, it is necessary to enlarge drive pin and spring to resist increased shear force due to increase in viscosity.When viscosity of the medium is greater than 1600Mpa.s, it is also necessary to strengthen lubrication, such as single seals leading to external flushing fluid, or double seals leading

 to isolation fluid.

2.Adopting static double mechanical seal and a pressurized flushing system.

3.Adopting a combination of hard-to-hard friction pair materials, such as silicon carbide-silicon carbide, or tungsten carbide-silicon carbide.

4.About thermal insulation structure,take measures to ensure that the viscosity of the medium does not increase due to the decrease in temperature.