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Clamp seal

The Techné clamp seal is an aseptic seal exclusively used in clamp (or tri-clamp) fittings. Depending on the country and the field of application, there are several dimensional standards:

  • Clamp seal DIN 32676
  • Clamp seal ISO 1127
  • Clamp seal SMS ISO 2852
  • Clamp seal BS OD/BS4825-3

A complete fitting is composed of two ferrules, a clamp for assembly and a seal for clamp fitting. This composition allows a simple and fast disassembly and reassembly of the set.

Aseptic seals are compatible with ferrules to DIN 32676.

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Profiles

Four profiles of triclover clamp seals are available:

  • Clamp seal type A (flanged)
  • Clamp seal type B (not flanged)
  • Mini clamp seal

  • Micro clamp seal

Namely:

  • For a ferrule outer diameter of 25 mm, the profile is a micro clamp or µ clamp.
  • For a ferrule outer diameter of 34 mm, the clamp A or B is called mini clamp.
  • From a ferrule outer diameter of 50.5 mm, the seal is called clamp.

Main applications

The clamp seal is intended to ensure the sealing in the connection of several elements of piping. The main consumers of clamp seals are the food, chemical, pharmaceutical and medical industries.

Agri-food sector

  • Diaphragm pump (milk industry)
  • Milk tank
  • Fermentation tank
  • Bottling carousel

  • Liquor tank and emptying

Pharmaceutical sector

  • Flexible connection
  • Various controllers
  • Bypass T
  • Clamp plug
  • Valve

Materials and approvals

Human health is a central concern for the food, chemical and pharmaceutical industries in the manufacture and quality control of products for human consumption. Consequently, these fields require materials that meet their specifications in order to limit the impact of materials on their environment.

For its standard size ranges, Techné supplies clamp seals in various elastomers and thermoplastics:

  • EPDM black peroxide 
  • MVQ peroxide translucent
  • MVQ platinum translucent
  • FKM black
  • FKM green
  • PTFE white

Other materials are available upon request to meet specific needs:

  • Metal detectable elastomers
  • PTFE metal detectable
  • PTFE Bio Tech
  • NBR blue
  • White or red QVM

Techné compounds are developed in compliance with the regulatory requirements in force in many countries. Depending on the compound and color, the following approvals are available:

Food approvals:

  • FDA
  • CE 1935/2004
  • GB 4806.11/GB 9685
  • BNIC/Cognac
  • 3A


Pharmaceutical:

  • FDA
  • USP VI

Drinking water:

  • ACS
  • UBA/W270
  • WRAS