Bergmann M7N Equivilant Mechanical Seal
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As well as the primary sizes and seals types listed here, we have stock available in many other shaft sizes, face materials, seal materials, and seat/stationary available separately. Please contact us if you have these requirements.
Features summary
- Double wave spring for strength and reliability
- Compact design for confined spaces
- Minimal shaft wear
- Suitable to DIN24960 (EN12756) dimensions
- Positively driven
- Energised rotary 'O'-ring
- Suitable for food, dairy, brewery and pharmaceutical applications
Sinusoidal wave spring and 'O'-ring mounted seal commonly utilised in the European chemical process industries. Manufactured to suit DIN24960 (EN12756) dimensions.
Supplied with a Stainless Steel head retainer and inserted face. Stocked as a standard assembly with Type 8DINL 'O'-ring seat with antirotation provision.
Our mechanical seals are manufactured to a very high precision, and are as good, if not better, quality than OEM parts and are ISO 9001:2015 certified.
Performance
Important: Temperature limits are the theoretical elastomer or design limitations. For maximum theoretical operating pressure for your specific size and application please refer to calculation example within this data sheet. All performance information given is for guidance only and is dependent on material, operating and application factors that affect seal performance.
The maximum operating pressures shown in the chart are based on a Carbon rotary face running against a Reaction Bonded Silicon Carbide stationary face.
It also assumes stable operation at the speeds shown in the multiplier tables below, in a clean, cool, lubricating and non-volatile fluid with an adequate flush rate.
To calculate the approximate maximum operating pressure for a specific duty, multiply the pressure value obtained from the chart opposite for a particular shaft size by the appropriate factors given in the tables below.
Application conditions:
Face and seat materials:
A. Shaft size: 2” therefore pressure is 22 bar (from PV chart)
B. Media: Water (multiplier = 0.85)
C. Temperature: 50°C (multiplier = 1.00)
D. Speed: 1450 rpm (multiplier = 1.00)
E. Face combination: Carbon vs Sintered Silicon Carbide (multiplier = 0.85)
For this particular seal size, the calculation for the approximate guidance maximum operating pressure would be:
A x B x C x D x E = 22 bar x 0.85 x 1.00 x 1.00 x 0.85 = 15.90 bar
General
As well as the primary sizes and seals types listed here, we have stock available in many other shaft sizes, face materials, seal materials, and seat/stationary available separately. Please contact us if you have these requirements:
Please note that due to the many operational and application variables that affect seal performance, the information given on this page is for guidance only.
We therefore strongly recommend careful individual testing and monitoring of all seals and related equipment for any proposed application.
Our policy is one of continuous technical and efficiency improvement. As such, all specifications may be subject to change without prior notice.
