Sealants · Joint Sealants
Sikaflex® Construction
One-Component Polyurethane Construction Joint Sealant
Sika In stock
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Sealants · Construction sealants
SikaHyflex®-305 EU
Sika TDS On demand
Available on order Not held in stock. Ask us for the current lead time and minimum order.
- Very good weathering resistance Very good weathering resistance.
- Movement capability of ±50 % Movement capability of ±50 % (ASTM C 719).
- Very good workability Very good workability.
- Good adhesion to a wide Good adhesion to a wide range of substrates.
- Solvent-free Solvent-free.
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- Sika products supplierIslamabad & Rawalpindi.
- Get a quote on WhatsAppSend your product and quantity for current pricing.
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Product at a glance
Temperature range
−40 °C to +150 °C Resistance to Weathering 10 (ISO / DIS 19862) Joint Design The joint width must be designed to suit the joint movement required and the movement capability of the sealant. The joint width shall be ≥ 6 m
Key benefits
- Very good weathering resistance
- Movement capability of ±50 %
- Very good workability
- Good adhesion to a wide
- Solvent-free
- Neutral cure
SikaHyflex®-305 EU
SikaHyflex®-305 EU is a 1-component, moisture curing, low-modulus elastic weather sealant.
Recommended uses
- SikaHyflex®-305 EU is designed for weather proofing and sealing applications where durability under severe conditions is required.
- SikaHyflex®-305 EU is particularly suited for use as a weather sealant for curtain wall and metal cladding facades.
Technical information
Technical information
Verified performance data for SikaHyflex®-305 EU, taken directly from the Sika Pakistan Product Data Sheet.
| Chemical Base | Neutral cure silicone |
|---|---|
| Colour | range to be defined by local sales organization. |
| Density | ~ 1.50 kg/l (ISO 1183–1) |
| Shore A Hardness | ~ 25 (after 28 days) (ISO 868) Secant Tensile Modulus ~ 0.35 N/mm 2 at 100% elongation (23 °C ) (ISO 8339) ~ 0.40 N/mm |
| Elongation at Break | ~ 900% (ISO 37) |
| Movement Capability | ± 25% (ISO 9047) ± 50% (ASTM C 719) Elastic Recovery ~ 80% (ISO 7389) Tear Propagation Resistance |
| Service Temperature | −40 °C to +150 °C Resistance to Weathering 10 (ISO / DIS 19862) Joint Design The joint width must be designed to suit the joint movement required and the movement capability of the sealant. The joint width shall be ≥ 6 m |
| Compatibility | SikaHyflex®-305 EU is compatible with most SikaHyflex® and Sikasil® silicone weather sealants, Sikasil® SG adhesives and Sikasil® IG sealants. All other sealants and adhesives have to be approved by Sika before using the |
| Consumption | Joint length [m] per 600 ml foil pack Joint width [mm]Joint depth [mm] 10106 5158 32010 22512 1.33015 |
| Sag Flow | ~ 0 mm (20 mm profile, 50 °C) (ISO 7390) |
| Ambient Air Temperature | +5 °C to +40 °C, min. 3 °C above dew point temperature |
| Substrate Temperature | +5 °C to +40 °C Backing Material Use closed cell, polyethylene foam backing rods. PRODUCT DATA SHEET SikaHyflex®-305 EU December 2022, Version 03.01 020511030000000042 |
| Curing Rate | ~ 2 mm/24 hours (23 °C / 50% r.h.) (CQP 049–2) |
| Skin Time | ~ 25 minutes (23 °C / 50% r.h.) (CQP 019–1) Tack Free Time ~ 180 minutes (23 °C / 50% r.h.) (CQP 019–1) |
| Standards | EN 15651–1 F EXT-INT CC 25 LM; EN 15651–2 G CC 25 LM; ASTM C 920, class 50; ISO 11600 F 25 LM & G 25 LM; DIN 18540 F |
Source: Sika Pakistan Product Data Sheet, SikaHyflex®-305 EU (December 2022, Version 03.01).
Packaging & storage
Packaging & storage
Packaging
300 ml catridge, 25 cartridges per box 400 ml foil pack, 20 foil packs per box 600 ml foil pack, 20 foil packs per box
Storage
SikaHyflex®-305 EU shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.
Shelf life
SikaHyflex®-305 EU has a shelf life of 12 months for cartridges and 15 months for foil packs from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met.
Application guide
Application guide (2 easy steps)
- ApplicationSUBSTRATE PREPARATION The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. The following priming and/or pre-treatment procedures shall be followed: Non-porous substrates Float glass, coated glass, anodised aluminium and stainless steel have to be pre-treated using Sika® Aktivator-205, Sika® Aktivator-100 or Sika® Cleaner P. Powder coated and PVDF coated
- Cleaning of ToolsClean all tools and application equipment immediately after use with Sika® Remover-208 and/or Sika® Cleaning Wipes-100. Once cured, residual material can only be removed mechanically.
Follow the official Sika Technical Data Sheet for full application details.
Technical documents
Data sheets for this product
More data sheets in Sealing & Bonding
FAQs
Frequently asked questions
What is SikaHyflex®-305 EU?
SikaHyflex®-305 EU is a 1-component, moisture curing, low-modulus elastic weather sealant.
What packaging is available?
300 ml catridge, 25 cartridges per box 400 ml foil pack, 20 foil packs per box 600 ml foil pack, 20 foil packs per box
What is the shelf life?
SikaHyflex®-305 EU has a shelf life of 12 months for cartridges and 15 months for foil packs from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met. SikaHyflex®-305 EU shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.
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