• KRASO® Universal Mechanical Duct Sealing System 100mm with stainless steel compression plates and green torque-controlled nuts, designed for gas-, water-, and pressure-tight sealing of multiple cables or pipes
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KRASO® Universal Mechanical Duct Sealing System

KRASO® Universal Mechanical Duct Sealing System

£99.76
£99.76
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Core Drilling/Casing
Design
External Diameter Cable

The Kraso® Universal Mechanical Seal range is designed specifically to fit the most common duct sizes used across the UK and Europe – 100mm, 125mm, 150mm, and 200mm. These split mechanical seals are ideal for retrofit installations, where cables or pipes are already in place, and provide a secure gas-, water-, and pressure-tight seal.

Thanks to their segmented, peelable EPDM rubber layers, Kraso® Universal seals can be easily adjusted to match a wide variety of cable and pipe diameters within each duct size, reducing the need to hold multiple fixed-size seals in stock. This makes them one of the most versatile duct sealing solutions on the market.

Combined with robust stainless steel compression plates and torque-controlled nuts, the Universal range ensures consistent installation quality, long-term durability, and compliance with demanding standards such as DafStB stress class 1 + 2, radon tightness (FHRK MB 101), and TA-Luft gas/odour-tightness.

Whether used in water utilities, energy networks, data centres, or construction projects, Kraso® Universal Mechanical Seals offer a flexible, retrofit-friendly solution for sealing the most frequently used duct sizes across infrastructure projects in Euro

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Type / Item KRASO ® Sealing Insert Universal Multiple - split -
Core Drilling / Casing in mm 100 125 150 200
Stepless onion ring technology: external cable diameter from... to ... in mm
Design 1 4 x 6 - 33 mm or blind 6 x 6 - 28 mm or blind 3 x 6 - 52 mm or blind 3 x 6 - 28 mm or blind
4 x 6 - 52 mm or blind
Design 2 3 x 6 - 18 mm or blind
2 x 6 - 33 mm or blind		 - 4 x 6 - 18 mm or blind
6 x 6 - 33 mm or blind		 7 x 6 - 18 mm or blind
8 x 6 - 33 mm or blind
Design 3 8 x 6 - 18 mm or blind - 6 x 6 - 38 mm or blind -
Design 4 1 x 18 to 65mm or blind - 1 x 12 to 75mm or blind 1 x 110 to 160mm

Key Features

Designed for Standard Duct Sizes
Available in 100mm, 125mm, 150mm, and 200mm, the four most widely used duct sizes across the UK and Europe, making them the go-to choice for utility and infrastructure projects.

Split Design for Retrofit Installations
Every Universal seal is supplied in split form, allowing quick and reliable installation around existing cables and pipes without the need to disconnect or reroute services.

Adjustable Segmented Layers
Features peelable EPDM rubber segments that can be removed in steps, enabling one seal to accommodate a wide range of cable and pipe diameters within each duct size.

High Pressure Resistance
Tested to withstand up to 2.5 bar pressure (25m water head), providing reliable sealing in underground ducts, boreholes, and submerged conditions.

Patented Torque Nut System
Fitted with patented torque-controlled nuts, eliminating the need for torque wrenches and ensuring installers always achieve correct compression without risk of under- or over-tightening.

Gas- & Odour-Tight
Certified to meet TA-Luft (TA-Air) standards for gas and odour tightness, preventing unwanted ingress or leakage.

Radon Tightness Certified
IAF-tested to comply with FHRK leaflet MB 101, meeting requirements for radon precautionary areas.

Durable KRASO® Build Quality
Manufactured with 5mm V2A stainless steel clamping plates and a 40mm EPDM sealing body, using welded studs (not through bolts) for maximum strength, longevity, and corrosion resistance.

Customised Options Available
While the Universal range covers the most common duct sizes, customised seals can be produced for special duct diameters, unique layouts, or bespoke project requirements – Please contact our technical sales team on +44 (0)161 874 1480 or info@accablesolutions.com

FAQs

What duct sizes are Kraso® Universal Seals available in?
The Universal range is available in 100mm, 125mm, 150mm, and 200mm, which are the most common duct sizes used across the UK and Europe.

Can Kraso® Universal Seals be installed in retrofit projects?
Yes. The entire range is supplied in a split design, making them ideal for retrofit installations where existing cables or pipes are already in place. They can be quickly installed without the need to disconnect or reroute services.

How do the segmented layers work?Each Universal seal is built with peelable EPDM rubber layers. These can be removed in steps, allowing the seal to be precisely adjusted to fit different cable or pipe diameters within the same duct size. This means one seal can cover multiple diameter variations.

How much pressure can a Universal seal withstand?
They are tested to resist up to 2.5 bar pressure (equivalent to 25m of water head), making them suitable for underground ducts, submerged penetrations, and high-pressure applications.

Are Kraso® Universal Seals gas-tight?Yes. They are gas- and odour-tight, meeting TA-Luft (TA-Air) quality standards, and are also IAF-tested for radon tightness according to FHRK leaflet MB 101.

Can Kraso® Seals be used with running water?
Yes, Kraso® Mechanical Seals can be used in ducts with running water. However, please contact our technical helpline before installation for guidance:

📞 +44 (0)161 874 1480
📧 info@accablesolutions.com

Do I need special tools for installation?No. All seals are fitted with patented torque-controlled nuts, meaning you don’t need a torque wrench. Installers can achieve consistent and reliable compression without risk of under- or over-tightening.

What materials are used in the Universal range?
Each seal features 5mm thick V2A stainless steel compression plates and a 40mm EPDM sealing body. Unlike cheaper alternatives, they use welded studs instead of through bolts for superior strength and corrosion resistance.

Are customised versions available?
Yes. While the standard Universal range covers the most widely used duct sizes (100mm–200mm), custom seals can be manufactured for special duct diameters, unique pipe/cable arrangements, or specific project requirements. please contact our technical helpline for a quote on a customised seal.

📞 +44 (0)161 874 1480
📧 info@accablesolutions.com

Where are Kraso® Universal Seals typically used?
They are widely used in:

  • Water and wastewater utilities
  • Energy networks and substations
  • Data centres and telecom facilities
  • Civil engineering and construction projects
  • Petrochemical and industrial plants
  • Radon precautionary areas

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Technical DatasheetInstallation Instructions