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Bostik Professional S21 - Multi-Purpose Silicone Sealant - Acetoxy Silicone

Verified by manufacturer 3 months ago

Bostik Ltd Third party certifications:
  • EPD

    EPD

    Certificate type

  • EC1plus

    EC1plus

    Certificate type

Professional grade acetoxy silicone for façade, glazing and sanitary joints. Meets BS EN 15651:2017 Parts 1, 2 and 3; façade, glazing and sanitary joints.

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Application

Acetoxy-based multi-purpose silicone sealant for façade, glazing and sanitary joints. Suitable for sealing joints comprising of painted timber, non-ferrous metals, tiles and baths, basins, shower trays and kitchen worktops.

Meets BS EN 15651:2017 Parts 1, 2 and 3; façade, glazing and sanitary joints.

Description

Professional grade acetoxy silicone. It is a multi-purpose grade, suitable for façade, glazing and sanitary joints.


Features and benefits:

  • Meets BS EN 15651:2017 Parts 1, 2 and 3; façade, glazing and sanitary joints.
  • Mould resistant formula and is resistant to cracking, shrinking and discolouration.
  • Low modulus.
  • UV and weather resistant.
  • Interior and exterior use.
  • Suitable for sealing joints comprising of painted timber, non-ferrous metals, tiles and baths, basins, shower trays and kitchen worktops.
  • Supplied in a post-consumer recycled (PCR) cartridge.
  • Certified to GEV-EMICODE® EC1+ for very low emissions.

General information

Color

White

Grey

Clear

Black

Brown

Finish

Silicone

Material

Silicone

Shape

Formless

Uniclass

Pr_30_31_76_77 Silicone construction joint sealantsPrimary

CAWS

L20/80 Sealant joints

L20/820 Sealant joints

L40/250 Bead-fixed single glazing – tape and sealant

L40/330 Bead-fixed single glazing – capping

L10/810 Sealant joints

L40/496 U-profiled double glazing

L40/310 Bead-fixed single glazing – tape, sealant and trim

N13/68 Sealant for pointing

L40/495 U-profiled single glazing

L10/75 Sealant joints

L40/350 Bead-fixed single glazing – curing compound and trim

L40/230 Bead-fixed single glazing – non-setting compound

N13/580 Sealant for pointing

Product range

Professional Grade Sealants / Multi Purpose

Specification data - Silicone construction joint sealants

Standard

Meets BS EN 15651:2017 Parts 1, 2 and 3.

Third-party certification

GEV EMICODE® EC1 Plus; CE and UKCA Marked.

Material

Acetoxy-based - unfilled 100% pure silicone.

Class

BS EN 15651-1: F-EXT-INT-CC 20LM,
BS EN 15651-2: G-CC 20LM,
BS EN 15651-3: XS1.

Colour

White (30623036).

Clear (30623039).

Black (30623041).

Brown (30623054).

Grey (30623110).

Fire performance

-

Fire resistance

No fire resistance.

Reaction to fire

Class E.

Fungicide

Contains Fungicide XS1 classification.

Form

Soft gunnable paste.

Odour

Typical sharp acid.

Shore A hardness

Approx. 20.

Shelf life

Up to 24 months.

Guidance for specification option:

Consult manufacturer for details.

Modulus at 100% elongation

0.4 N/mm².

Application rate

125 g/minute.

Application temperature

+5 to +40°C.

Curing time

2 mm per 24 hours.

Density

1.05 g/mL.

Elongation at break

550%.

Joint movement

20%.

Skin formation at 23°C and 50% Relative Humidity (RH)

5–6 minutes.

Guidance for specification option:

Always tool sealant within the given skin formation time frame.

Service temperature

-40 to +150°C.

Tensile strength

1.50 N/mm².

Sustainability data

Contains Red List materials

No

Country of material origin

Europe

Country of product manufacture

Europe

Material

Silicone

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

6.82 kg CO₂ eq/kg

Recyclability

For disposal instructions see separate Health and Safety Data Sheet for BOSTIK S21 SILICONE, available at www.bostik.com/uk

Third party certifications

Third party certifications

EPD

EPD

Bostik S21 Silicone EPD

EC1plus

EC1plus

Bostik S21 Silicone GEV EMICODE EC1 Plus

EPD

EPD

Bostik Silicones EPD Group 2

Literature

Bostik S21 CE Declaration of Performance

Bostik S21 CE Declaration of Performance

Bostik S21 Silicone TDS

Bostik S21 Silicone TDS

Bostik S21 UKCA Declaration of Performance

Bostik S21 UKCA Declaration of Performance

Bostik Professional Grade Sealants Brochure

Bostik Professional Grade Sealants Brochure

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