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Sika  |  SKU: 835413

Sikasil-825 Neutral Cure Silicone – Portland Stone – 380ml

Regular price £283.58
Colour
Pack

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Got a query? Call 0330 055 8210

We're open from 8am to 5pm, Monday to Thursday, and 8am to 4:30pm on Friday.

Delivery and Shipping

Delivery is £12.50 + VAT to UK Mainland. Orders over £100.00 + VAT qualify for free delivery, except for certain products—these will be clearly shown at checkout.

Orders placed by 3pm (stock permitting) are dispatched the same working day on a next working day service (not guaranteed).

Some areas, like Northern Scotland, may take 2–3 working days.

Deliveries outside the UK Mainland are charged at cost—please contact us.

We're open:
Mon–Thurs: 8am–5pm
Friday: 8am–4:30pm

Call us: 0330 055 8210

Sikasil-825 Neutral Cure Silicone – Low modulus, neutral cure silicone sealant

Sikasil®-825 is a low modulus, neutral cure, alkoxy, low odour silicone sealant that adheres to a wide range of porous and non-porous surfaces without the need for priming.

Key features

  • Excellent tooling and slow skinning for large scale construction and glazing
  • Adheres to glass, metals, plastics, painted or unpainted wood, uPVC and polycarbonate
  • Excellent external weathering over many years
  • High viscosity, non-slump formula
  • Resistant to fumed hydrogen peroxide and formaldehyde once fully cured
  • ISO 11600 F25LM and G25LM; UKCA / CE marked under EN 15651; ASTM C719 Class 35

Typical applications

  • Perimeter pointing around uPVC, wood and powder coated aluminium
  • Sealing soft metals such as lead, copper and zinc
  • Weather sealing pre-formed panels and curtain walling; glazing and draught proofing
  • Precast concrete and masonry including brick, natural stone and terracotta
  • Expansion joints; bedding and sealing insulated glass units

Available options

  • Portland Stone – Box of 25

Technical information

Property Value
Chemical base Alkoxy silicone
Colour Portland Stone
Shore A hardness ca. 30
Movement capability ±25% (ISO 11600); ±35% (ASTM C719)
Elastic recovery >70%
Shrinkage <5%
Service temperature -50°C to +150°C
Pack 380 ml cartridge
Shelf life 12 months; store +5°C to +25°C

Limitations

  • Storage outside +5°C to +25°C may dramatically reduce shelf life

Health and safety

Read the safety data sheet before use. Always test adhesion and compatibility on a small area before full application.

Download the Sikasil-825 technical data sheet (PDF)

Download the Sikasil-825 safety data sheet (PDF)

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