NBS Source

Hybriflex FR

Sika Limited Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

One-part, hybrid-based, fire-rated sealant and adhesive.

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  • High-traffic floor joints such as:
  • Garage forecourts.
  • Warehouses.
  • Factory floors.
  • Sports arenas.
  • Shopping centres.


One-part, neutral cure, elastic silicone sealant which has a fire rating of up to four hours in certain joint configurations (when tested to BS EN 1366-4 2006). Specifically designed as a multipurpose floor and wall grade for all concrete saw cuts and cladding applications and/ or slab expansion joints, where fire resistance is required.

Features and benefits:

  • Good slump resistance.
  • Abrasion resistant.
  • Over-paintable with most paints.
  • Can be applied to damp/ wet surfaces.
  • Resistant to chemicals and petrol.
  • Good flexibility (±20% facade).
  • Non-hazardous to health.


  • High-traffic floor joints such as:
  • Garage forecourts.
  • Warehouses.
  • Factory floors.
  • Sports arenas.
  • Shopping centres.


  • Tested in accordance with EN 1366 Part 4 2006 as detailed in Warrington Fire Research Report No. 195854/A (October 2010).
  • EN 15651-1:2012, type F-EXT-INT-CC, class F20HM.
  • EN 15651-4:2012, type PW-EXT-INT-CC, class PW12.5E.

General information


M10/468 Sealant movement joints with metal edgings

M12/430 Sealant movement joints

M12/65 Sealant movement joints

M40/75 Sealant movement joints

M40/805 Sealant movement joints with metal edgings

M40/815 Sealant movement joints

M41/455 Sealant movement joints with metal edgings

Product range


Specification data

Product Reference

Hybriflex FR

Standard product features



Technical characteristics:

  • Form: Paste.
  • Application temperature: 5–50°C.
  • Service temperature: -40°C to +90°C.
  • Resistance to dilute acids and bases: Good.
  • Resistance to UV radiation: Excellent.
  • Shore A hardness (to ISO 868-3): 30–40.
  • Water and salt spray resistance: Excellent.
  • Elastic recovery (to ISO 7389): 74%.
  • Curing rate (at 50% RH and 23°C): ~3 mm/24 h; ~6 mm/48 h; ~8 mm/72 h.
  • Movement accommodation: ±20%.
  • Modulus (ISO 8339): 0.48 (high, at 60% elongation.
  • Elongation (at break): >250%.

Joint dimensions:

- Width (to BS 6213):

  • Minimum: 6 mm.
  • Maximum: Trafficked: 20 mm; Untrafficked: 30 mm.

- Depth:

10 mm.

Third party certifications

  • Certificate: HYBFR/1-CPR/2014

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