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Building Silicone

FA120 is a low modulus, neutral cure silicone sealant which forms a durable and flexible weather seal.


FA120 is a low modulus, neutral curing silicone sealant which cures rapidly to form a permanently flexible, highly elastic, durable weatherseal. It bonds well to most construction materials and is suitable for use in many demanding sealing applications such as:

• the perimeter sealing of PVCu window and door frames

• for use in cold stores, kitchens and bathrooms.

  • Excellent adhesion to most building materials
  • Cures rapidly to provide a permanent flexible seal
  • Low modulus: accommodates high movement
  • Contains powerful fungicide to resist mould growth

Technical data

PropertyText MethodResults
Composition neutral cure silicone sealant with fungicide 
Specific Gravity 1.00 
ConsistencyISO 7390, profile U20non-sag
Shore A Hardness ISO 86824
Skin Forming Timeat 23°C, 50% RH5 minutes
Tack Free Time  ~ 20 minutes
Cure Rateat 23°C, 50% RH 2 mm/1st day
Tensile StrengthISO 83390.5 N/mm² 
Modulus at 100% ElongationISO 8339 0.38 N/mm²
Elongation at BreakISO 8339200% 
Movement Accommodation 25% 
Elastic RecoveryISO 7389 90%
Application Temperature +5°C to +40°C
Service Temperature Range -40°C to +110°C
Storage  Store in dry conditions between +5°C and +25°C.
Shelf Life 12 months when stored as recommended in original unopened containers.

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