Seraflex Elastic Thread 899 Brown


Regular price $4.35 CAD Save Liquid error (product-template line 131): -Infinity%

5 item(s) in stock

SERAFLEX is the perfect sewing thread for highly elastic seams. Due to it innovative raw material PTT (37% renewable raw material) an elongation of approx. 65% is achieved, making all seams highly elastic.

SERAFLEX makes especially the straight stitch extremely stretchable, in the best case even a doubling of the seam elasticity can be achieved compared to seams with conventional sewing threads.

Due to its extremely elastic properties, SERAFLEX is primarily used for clothing, e.g. as sewing thread for sportswear outdoor, women’s, men’s and children’s clothing as well as for lingerie and underwear.

130 meters (142 yards) per spool.

Needle size: Nm 70-80

Raw Material: 100% PTT (Polytrimethylenterephthalat)

  • The perfect sewing thread for all elastic fabrics
  • Makes especially the straight stitch extremely stretchable (elongation of approx. 65%)
  • Double seam elasticity can be achieved compared to seams with conventional sewing threads
  • With SERAFLEX as lockstitch, ordinary chainstitch / serging stitch can be replaced!
  • SERAFLEX should be used both as a needle and as a bobbin thread -Adjustment of the needle thread tension according to “as much as necessary, as little as possible” i.e. as loose as possible
  • The bobbin thread should also be wound with as little thread tension as possible to prevent the thread from stretching beforehand

Returns and Exchanges

Returns must be initiated within 14 days of receipt of product. There will be a 15% restocking fee as well as the customer is responsible for the return shipping costs.  The goods must be unused, undamaged and in the original package.  Refunds (minus the 15% restocking fee) will be issued when we have received back the inventory in unused and undamaged condition. Shipping charges will not be refunded.

For goods returned damaged or opened, there will be a 50% restocking fee and the remaining 50% will be issued in the form of store credit. There are no returns on pre-washed fabric.

To begin the return process please contact us at with your order number as the email subject. Please await further instructions and the return address.

It is recommended to purchase tracking when making returns as we are not responsible for lost packages.

If we have made an error with your order, we will pay the cost of return shipping.  Please contact us within 7 days so that we may correct the problem for you as soon as possible.


Note: There are no returns on patterns, downloaded patterns, personal care items (i.e. soap bars, lip balm) or clearance items. Yarn that has been balled or caked cannot be returned or exchanged.

All Black Friday/Cyber Monday Sale and Boxing Week Sale items are final sale.  No refunds, returns or exchanges.  All items sold as is.

Order Cancellation

Orders over $10 CAD are subject to a $3 CAD cancellation fee (this is to cover the non-refundable charges and processing fees that we have to pay). Orders for fabric will incur a 15% restocking if cancellations are made after fabric has been cut.

Fees and Charges

Charges incurred on us as a result of error on the part of the customer (i.e. address change fee) will be forwarded to the customer up to 60 days following the date of purchase. 

Sales and Orders

Any order for a single fabric over 20 half yards (or Qty 4 for panels) requires pre-approval, please call or email beforehand. 

We do NOT sell wholesale (business to business). Any commercial orders will be cancelled. 
We reserve the right to cancel orders that exceed our retail cap. i.e. orders for large quantities of yardage that do not have pre-approval.


We do not assume responsibility for packages lost or damaged in transit. If you would like to purchase insurance, please contact us prior to placing your order.


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Seraflex Elastic Thread 899 Brown