Soudal Silirub ® Pro N - Airtight LMN Silicone

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Soudal Silirub ® Pro N - Airtight LMN Silicone

Soudal | Silicone Sealant

Soudal Silirub ® Pro N is an Airtight, Low Modulus Premium Grade Neutral Cure Silicone Sealant. It is virtually odourless with fast skinning time and final cure.

Soudal Silirub ® Pro N is a 100% Pure Silicone Sealant with no shrinkage. Extra thick-bodied. Excellent toolability and Primerless Adhesion on common construction materials (i.e Glass, Plastics, Masonry Substrates, Metals and Wood).

Soudal Silirub ® Pro N has high movement capability with resistance to weathering and many chemicals. High and low temperature resistance. It contains a strong Fungicide (XS1 Fungicide) to prevent unsightly Black Mould growth.

Soudal Silirub ® Pro N Can be used with all types of Glass (Except Self-Cleaning types).

This product should not be confused with 'Silirub® N' which is a much lower grade of Neutral Cure Silicone Sealant.

This product is part of ‘Soudal Window Systems’ - SWS.


Soudal Silirub ® Pro N - Airtight LMN Silicone

  • 100% Pure Silicone Sealant

  • Long open time

  • Excellent moisture & mould resistance

  • Impervious to mould, contains ZnP (Biocide with Fungicidal Action)

  • Very easy to apply

  • Colourfast & UV Resistant

  • Permanent elastic after curing

  • Very good adhesion on many chemicals

  • Low modulus

  • Corrosion free


Areas for Use:

  • Glazing, Construction and Industrial Applications.

  • Top Sealing in Glazing

  • Sealing of Window and Door Frames.

  • Sealing between PVC, Treated Wooden and Metal Profiles and Glass

  • Sealing joints in Sanitary Rooms (Bathrooms and Kitchens)

  • Sealing in Refrigerators and Container Constructions.

  • Sealing of Roofline and Drainage Systems.

  • Sealing of Aluminium Glazing Systems, Curtain Walling and Façade Panels.

  • Sealing of Expansion Joints.

  • Roofing Seals including Lead, Roofing Slates, and Fibre-cement.

  • Industrial Applications; Coated Metals, Anodized Aluminium, Stainless Steel.

  • Sealing in HVAC Ducting, Air Conditioning Systems, Pipework & Drainage Joints.

Compatibility with Glass:

Tests carried out in Soudal Laboratories show that Silirub® Pro N is compatible with most edge seals of insulating double glazing and conventional PVB films.

External testing at TÜV Rheinland have shown no visual defects or no other inconsistencies that were found between the secondary seal or PVB film and Silirub® Pro N after exposure to high temperature and humidity (Report No. 12490R-a-89202273).

Due to the large number of edge sealing systems on the market, it is impossible to test the compatibility of all combinations with glazing sealants.

We recommend a compatibility test for both double glass systems and laminated glass systems.

Surface Preparation:

Surfaces should be clean, dry, free of dust and grease.

Porous surfaces in water loaded applications should be primed with Soudal Primer 150. No primer needed for non-porous substrates.

There is no adhesion on PE, PP, PTFE (Teflon®) and bituminous substrates. We recommend a preliminary compatibility test.

Application Method:

  • Application Method: With a manual or pneumatic caulking gun.

  • Cleaning: Clean with a Surface Cleaner immediately after use.

  • Finishing: With a soapy solution or Soudal Finishing Solution before skinning.

  • Repair: With the same material

Joint Dimensions:

  • Minimum Width for Joints: 5 mm

  • Maximum Width for Joints: 30 mm

  • Minimum Depth for Joints: 5 mm

  • Recommendation Sealing Jobs: Joint Width = 2 x Joint Depth.


  • Do not use on natural stones like marble, granite etc... as it may cause staining.

  • Not recommended for use on Polycarbonate (Use Silirub® AL2T)

  • A total absence of UV can cause a colour change of the sealant.

Data Sheets

Technical Data Sheet


Safety Data Sheet

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£3.79 £2.99 ex. VAT | £4.55 £3.59 inc. VAT

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