YT7540 Aramid Felt
YT7540 Aramid Felt
Needled aramid felt for thermal barrier, cushioning and end-winding support. Compressible under winding tension, resilient at 220°C — used where rigid sheet paper is too stiff.
Priced per requirement — tell us grade, width, thickness and quantity and we quote against it.
Technical specifications
| Composition | Meta-aramid and para-aramid fibre |
|---|---|
| Temperature range | Continuous service to 220 °C |
| Felt | Needled, compressible under winding tension |
| Cords | Two-strand and three-strand tie cord |
| Sleeving | Woven and braided, for lead and end-winding protection |
| Compliance | UL, CE, RoHS, REACH |
Typical values for this material class, given as a guide. The datasheet carries the property table, test methods and tolerances for the grade and is the governing document.
Overview
YT7540 is a needled aramid felt — fibre mechanically entangled into a thick, compressible mat rather than formed into a sheet. It is used where insulation has to fill a space, take up tolerance or cushion a component, and where a rigid paper would simply not conform.
Because it compresses under load and springs back, it is well suited to end-winding support and to packing that must stay in contact as a machine heats, cools and vibrates through service.
Where sheet material cannot go
- Compressible — takes up manufacturing tolerance and stays in contact under thermal movement
- Resilient at temperature — recovers rather than taking a permanent set at 220 °C
- Thermal barrier — the trapped air in the felt structure is what does the insulating
- Cushioning — protects components from vibration and mechanical contact
Key properties
- Needled aramid fibre construction
- Compressible under winding tension, resilient at 220 °C
- Thermal barrier and cushioning in one material
- Conforms to irregular surfaces and fills voids
- Inherently flame resistant, does not melt
- Chemically stable
Applications
End-winding support
Packing and support in machine end-windings, holding position through thermal cycling.
Thermal barriers
Heat shielding between components and around hot assemblies.
Cushioning
Protecting components from vibration and mechanical contact.
Gap filling
Taking up tolerance where a rigid material would not seat.
Standards and compliance
- UL recognised component — certification held by the manufacturer
- CE marked
- RoHS compliant
- REACH compliant
- Manufactured under ISO 9001:2015
Certificates of conformity and mill test certificates are supplied with each shipment. Third-party testing can be arranged on request where a specification demands independent verification.
Sizes, packing and supply
- Form: rolls and cut sheets
- Thickness and areal weight: to requirement
- Cut parts: die-cut to drawing on request
Quality and inspection
Every consignment is inspected before shipment and supplied with its mill certificate. For repeat programmes we hold the approved specification on file so a reorder repeats a known outcome rather than reopening the conversation.
Frequently asked questions
How much does it compress?
It is designed to compress under winding tension and recover. The datasheet gives the compression and recovery figures for the grade.
Does it take a permanent set at temperature?
It is chosen precisely because it stays resilient at 220 °C rather than collapsing. That is the difference between an aramid felt and a lower-temperature alternative.
Can it be die-cut?
Yes. Send the drawing and we will quote tooling and parts.
Is it a thermal insulator or an electrical one?
Both, but it is usually specified for thermal barrier and mechanical support. Where dielectric strength governs, a paper or laminate is the right material.
Can it be impregnated?
It takes up resin readily given its open structure. Tell us the system and we will advise.
Related products
Next step
Tell us the size and quantity
Send the thickness, slit width and annual volume for https://aramidpapers.com/wp-content/themes/aramidpapers and we come back with a costed offer, a firm lead time and the mill certificate you will receive with it.