How should width be matched to the channel?
The elastic should run through or sit within the sewing channel without folding or creating unnecessary friction. Allow for seam allowance and the way the elastic is fed during production.
30-SECOND SUMMARY
Quick answer: flat elastic size selection
- 3 mm offers a low profile for narrow channels.
- 5–7 mm provide progressively broader contact surfaces.
- 10 mm can offer more surface support but still needs a compatible channel and comfort test.
Flat elastic width should be selected from the sewing channel and final function, not from a larger-is-better assumption. 3, 5, 7 and 10 mm options serve different contact and profile requirements. This guide is designed to help purchasing, product-development and production teams separate the key technical criteria and move directly to the relevant Bilge Örme product pages.
When does 3 mm make sense?
3 mm flat elastic suits compact, lightweight and low-profile applications where space is limited and only a small contact area is required.
How do 5 mm and 7 mm differ?
Both are versatile apparel widths. The 7 mm option offers a broader surface, while 5 mm reduces bulk. The difference should be evaluated with the garment structure, stretch requirement and stitch pattern.
When is 10 mm useful?
10 mm flat elastic can distribute force over a wider area and create a more pronounced support zone. It should still be checked for skin comfort and channel compatibility.
What should be verified before ordering?
Confirm width, working stretch, recovery, color, sewing behavior, spool length and estimated volume. A stitched prototype is particularly valuable when the elastic contacts skin or is visible in the final product.
TECHNICAL NOTE
A product name alone does not guarantee technical equivalence.
Size, surface, working stretch, recovery, sewing or connection method and the final operating conditions should be evaluated together. When replacing an existing component, a physical sample and real use case provide the strongest reference.
Product pages connected to this guide
Questions about flat elastic size selection
Can I choose width only from the existing sample?+
A sample is a strong reference, but the final product geometry and required performance should also be considered.
Does wider elastic always provide more tension?+
No. Tension depends on construction and elastic core, not width alone.
Are 3 mm and 10 mm used in the same applications?+
They can overlap, but their profile and contact area differ significantly, so the final design determines suitability.
CONTENT OWNERBilge Örme Technical Content Team
Our content is prepared around Bilge Örme product families and production-focused field experience to support better product selection. Order-specific technical values should be confirmed against the sample and project conditions. Review our technical content policy and production and quality approach.
This content is for general technical guidance. Final product suitability, production construction and performance values may vary according to order conditions and sample approval.