Mechanical seals
Mechanical seals from ttv - for compressors, pumps, apparatus and machinery

Mechanical seals can only achieve their necessary sealing function and service life if important functional requirements are met. These requirements include the plane-parallelism of the sealing faces, the perpendicular positioning of the sealing faces to the rotation axis, the resilient contact between the sealing faces and a lubricating film between the two sealing faces of the mechanical seals. The sealing effect between the mechanical seals and other components such as housings or shafts is usually created using additional seals such as O-rings and gaskets.

When developing compressors, pumps and other equipment and machines, engineers need to prevent the escape of liquids or gases on a consistent basis. And it’s in this area where the impressive strengths of ttv mechanical seals really become clear.

For more information and technical details, please contact us directly.

Table of contents

Overview
Description mechanical seal
Applications mechanical seal
Advantages mechanical seal
Special versions mechanical seal
Technical informations
FAQ
More Products
Markets

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Your direct contact to us

Overview

description	Temperature range	Sliding Speed limit	pressure max.	material Rotary	Material Stationary	Material Secondary Seal
TTV1	-20°C to +180°C	15 m/sec.	10 bar	Kohle, SiC, WC	CrNiMo-Stahl	NBR, EPDM, FKM, FEP, KALREZ
TTV1S	-20°C to +120°C	15 m/sec.	10 bar	CrNiMo-Stahl, Kohle, SiC, WC	AI-Oxid, Kohle, SiC, WC	NBR, EPDM, FKM, FEP, KALREZ
TTV2	-20°C to +120°C	10 m/sec.	6 bar	Kohle, SiC, WC	AI-Oxid, SiC, WC	NBR, EPDM, FKM
TTV3, TTV3-2, TTV3-3	-20°C to +120°C	10 m/sec.	12 bar	Kohle, SiC, WC	AI-Oxid, Kohle, CrNiMo-Stahl, SiC, WC	NBR, EPDM, FKM
TTV4-D	-20°C to +120°C	10 m/sec.	12 bar	Kohle, SiC, WC	AI-Oxid, Kohle, CrNi-Stahl, SiC, WC	NBR, EPDM, FKM
TTV4-1, TTV4-2, TTV4-3, TTV4-4	-20°C to +120°C	10 m/sec.	12 bar	Kohle, SiC	AI-Oxid, SiC	NBR, EPDM, FKM
TTV5	-20°C to +180°C	20 m/sec.	10 bar	AI-Oxid, SiC, WC	Kohle, SiC, WC	NBR, EPDM, FKM
TTV6	-20°C to +220°C	20 m/sec.	20 bar	Kohle, SiC, WC	SiC, WC	NBR, EPDM, FKM, FEP, KALREZ
TTV7	-30°C to +220°C	20 m/sec.	16 bar	CrNiMo-Stahl, Kohle, SiC, WC	AI-Oxid, Kohle, SiC, WC	NBR, EPDM, FKM, FEP, KALREZ
TTV8	-30°C to +220°C	20 m/sec.	25 bar	Kohle, SiC, WC	AI-Oxid, Kohle, CrNiMo-Stahl, SiC, WC	NBR, EPDM, FKM, FEP, KALREZ
TTV10	-40°C to +200°C	10-16 m/sec.	25 bar	Kohle, SiC, WC	Kohle, CrNiMo-Stahl, SiC, WC	NBR, EPDM, FKM, FEP, KALREZ

Description mechanical seal

Serie TTV1
Single Spring Seal Conical Spring Single Directional Unbalanced According to DIN 24960

Serie TTV1S
Single Spring Seal Conical Spring Single Directional Unbalanced According to DIN 24960

Serie TTV2
Single Spring Seal Bellow Seal Double Directional Unbalanced

Serie TTV3, TTV3-2, TTV3-3
Single Spring Seal Double Directional Unbalanced According to DIN 24960

Serie TTV4-D
Single Spring Seal Bellow Seal Double Directional Unbalanced According to DIN 24960

Serie TTV4-1, TTV4-2, TTV4-3,TTV4-4
Single Spring Seal Bellow Seal Double Directional Unbalanced

Serie TTV5
Single Spring Seal Conical Spring Single Directional Unbalanced

Serie TTV6
Single Spring Seal Metal Bellow Seal Double Directional Unbalanced According to DIN 24960

Serie TTV7, TTV74
Single Spring Seal Wave Spring Seal (multiple Spring possible) Double Directional Unbalanced

Serie TTV8
Single Spring Seal Multiple Spring Seal double Directional Balanced

Serie TTV10-S, TTV10-Q, TTV10-D
TTV10-S: Single Catridge Seal with connections for steam quench and drainage
TTV10-Q: Single Cartridge Seal with liquid quench. Same design as "S" but including an oil seal on the atmosphere side (longer fitting lenght)
TTV10-D: Double Cartridge Seal with connections for forced circulation

Applications mechanical seal

Mechanical seals are used in almost every type of pump. From pumps in refineries right through to garden pumps, as well as pumps in the gas industry, in dairies, breweries and the food and drink industry, and those used in nuclear power plant construction too. Mechanical seals are used in almost every type of pump. From pumps in refineries right through to garden pumps, as well as pumps in the gas industry, in dairies, breweries and the food and drink industry, and those used in nuclear power plant construction too.

Advantages mechanical seal

Mechanical seals with a shaft diameter of 10 mm to 100 mm available as standard
Customer-specific solutions and diameters over 100 mm available as special seals
All ttv mechanical seals boast a long service life and high quality

Special versions Mechanical seal

As well as mechanical seals in all the usual standard versions, we can also provide special parts with large dimensions as engineering solutions.

Technical information

We will gladly send you technical information and further details. Please contact our Mr. Massimiliano Casini-Cherici directly, Tel. 07303/92874-26.

Frequently asked questions

Which mechanical seal is best suited to my application?

The optimum mechanical seal depends on factors such as medium, pressure, temperature, speed, shaft surface and installation position. A technical dealer can recommend a suitable mechanical seal based on this data.

What are the main differences between a single and a double mechanical seal?

A single mechanical seal has one sealing surface, while a double mechanical seal has two sealing surfaces. Double seals generally offer greater safety and better media retention.

Which materials are best suited for the sealing faces if I need to seal an aggressive medium?

Materials such as ceramic or silicon carbide are often suitable for aggressive media. The choice of material depends on the type of aggressiveness (e.g. corrosive, abrasive).

How important is the surface finish of the shaft for the service life of the mechanical seal?

A good surface finish (smooth, low roughness) extends the service life of the mechanical seal as it reduces friction and the risk of damage.

How often do I have to maintain or replace the mechanical seal?

The maintenance intervals depend on the operating conditions and the service life of the mechanical seal. Regular inspections and good lubrication can extend the service life and should be around 24 months for pump seals.

What are the signs of impending seal failure?

Signs include leaks, increased energy consumption and unusual noises.

How does a speed that is too high or too low affect the seal?

If the speed is too high, this can lead to increased wear and overheating. If the speed is too low, this can lead to insufficient lubrication and therefore increased friction.

Can I replace the mechanical seal myself or should I call in a specialist?

Replacing a mechanical seal requires specialist knowledge and special tools. A specialist should be commissioned for complex systems.

Which mechanical seal is suitable for a high-temperature application?

Seals made of special materials such as ceramics or certain high-temperature elastomers are suitable for high-temperature applications.

Are there mechanical seals that are approved for food contact?

Yes, there are mechanical seals made of food-safe materials that are approved and certified for use in the food industry.

How can I prevent leaks from a mechanical seal?

Leaks can be avoided by selecting the correct seal, careful installation, regular maintenance and good lubrication.

Why is my mechanical seal leaking despite regular maintenance?

Possible causes of leaks are wear, damage to the mechanical seal, incorrect installation, unsuitable materials or a change in operating conditions.

How does incorrect shaft alignment affect the seal?

Incorrect shaft alignment leads to increased stress on the mechanical seal and can result in leakage or premature failure.

Which mechanical seal is the most economical solution for my application?

The most economical solution depends on various factors, such as the purchase costs, operating costs, service life and possible failure costs. A technical dealer can carry out a cost-benefit analysis here.

Markets

Whether agricultural machinery, construction machinery, forestry technology, drive technology, mechanical engineering, automotive or aerospace, we are ready for your challenges. With our engineering solutions, we manage to offer added value in all decisive product parameters through solutions developed specifically for customers and applications. Get to know our competence and best examples in the most diverse markets.