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Sealants and caulk: safety data sheets

5 data sheets from the makers, one for each product, with what the hazard codes mean.

Silicone, acrylic, polyurethane and hybrid sealants. Some polyurethane products contain isocyanates.

Use the data sheet for the exact product you buy. A data sheet covers one maker's product, and two products that look the same can be classed differently. Makers update their sheets, so check the revision. Your supplier must give you the safety data sheet for a hazardous product: ask for it if it didn't come with the delivery. We link to the makers' own sheets; we don't copy or change them.

C-Tec CT1 (colours other than silver)

C-Tec

Safety data sheet (PDF) Revision October 2019. Link checked September 2026.

No hazard classification on this data sheet.

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Everbuild Everflex Contract 125 One Hour Caulk

Everbuild (Sika UK)

Safety data sheet (PDF) Revision July 2026. Link checked September 2026.

No hazard classification on this data sheet.

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Everbuild Everflex Premium+ 450 Builders Silicone

Everbuild (Sika UK)

Safety data sheet (PDF) Revision May 2026. Link checked September 2026.

Warning

  • H317 May cause an allergic skin reaction.
  • H319 Causes serious eye irritation.
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Sikaflex-11 FC Purform

Sika UK

Safety data sheet (PDF) Revision June 2026. Link checked September 2026.

Warning

  • H317 May cause an allergic skin reaction.
  • EUH204 Contains isocyanates. May produce an allergic reaction.
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Soudal Trade Sanitary Silicone

Soudal

Safety data sheet (PDF) A copy of the maker's sheet, on MKM's website.

The hazards are in section 2 of the data sheet.

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From HSE

A COSHH folder for every job, in SiteHelm PRO

The data sheets are free, here and in SiteHelm. SiteHelm PRO adds the job's COSHH folder: press + on any data sheet to add it to the job, and the folder keeps every product used there, with its hazard codes at a glance and the maker's sheet a click away. Add your own products too, and print the folder or put it with your RAMS and toolbox talks.

The first 100 get a free 1-year licence.

Get a free 1-year licenceSee COSHH in SiteHelm PRO

Other folders

Cement4 data sheetsConcrete, repair mortar and grout4 data sheetsMortar and admixtures8 data sheetsLime4 data sheetsScreed and self-levelling compound3 data sheetsPlaster and jointing5 data sheetsRender3 data sheetsPlasterboard1 data sheetCement, fibre and fire boards4 data sheetsTile adhesive, grout and tanking8 data sheetsAdhesives and resin anchors4 data sheetsExpanding foam4 data sheetsWood preservers and treatments5 data sheetsBitumen paint and primer3 data sheetsWhite spirit and solvents2 data sheetsBrick, patio and mortar cleaners5 data sheetsCleaners, bleach and drain cleaners5 data sheetsWeedkillers1 data sheetPlumbing: solvent cement, flux and solder3 data sheets

All COSHH data sheets

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