











































Seraflex 7840 Elastic Sewing Thread
- Fil élastique jusqu’à 65 % d’extension
- Idéal pour tissus stretch et extensibles
- Compatible machines à coudre domestiques
- Coutures souples, résistantes et confortables
🚚 Free delivery from 75 € purchase! 📦
Description
Seraflex is an elastic sewing thread designed for fabrics that stretch: sportswear, lingerie, underwear, and children's clothing. It stretches by up to 65%, allowing the seam to follow the movement of the fabric.
The setting
Seraflex is sewn with a straight stitch on a domestic sewing machine. Set a loose thread tension and use an Nm 70 to 80 needle.
Features
| Brand | Mettler |
|---|---|
| Reference | Seraflex 7840 |
| Length | 130 metres per spool |
| Stretch | Up to 65% |
| Fineness | Nm 83/3 (dtex 120x3) |
| Needle | Nm 70 to 80 |
| Setting | Straight stitch, loose thread tension |
Frequently asked questions
Do you need an overlocker to sew stretch fabrics with this thread?
A domestic sewing machine is sufficient. Seraflex is sewn with a straight stitch and loose thread tension.
Which needle should you use?
A size Nm 70 to 80 needle.
Which garments?
Fabrics that stretch when worn: sportswear, lingerie, underwear, children's clothing.
Fast delivery throughout Europe!
🌍 We deliver throughout Europe… and all over the world!
Wherever you are in Europe, your orders are carefully prepared and shipped quickly to arrive in perfect condition. 📦✨
✈️ Outside Europe?
It is possible that some countries are not yet available automatically at checkout.
If you cannot find yours, contact us directly: we will arrange a customized solution to organize your delivery, wherever you are.

Features
Seraflex, par Mettler
Jusqu’à 65 %
130 mètres
- Oeko-tex
- Argenté
- Beige
- Blanc
- Bleu
- Bleu pétrole
- Bleu roi
- Bordeaux
- Corail
- Fushia
- Gris
- Gris clair
- Gris foncé
- Jaune
- Marron
- Noir
- Orange
- Rose
- Rose poudré
- Rouge
- Turquoise
- Vert
- Vert menthe
- Violet
You might also like:
Newsletter
We keep you informed about our new products, current inspirations, and promotions!
European Fabrics 🌍
Pay in 3 interest-free installments with Alma 💰
Customer satisfaction 5/5 🌟
Discover why our customers give us 5 stars on Google.
Fast delivery throughout Europe!





































