Insulation Rings for 21700 18650 Batteries, 1 Sheet (100 pcs)
Insulation Rings for 21700/18650 Batteries — 1 Sheet (100 pcs)
We offer high-quality insulation gaskets (insulation rings) for 21700 and 18650 lithium-ion batteries. This set comes as one sheet containing 100 pieces, making it an ideal solution for service centers, workshops, and battery pack manufacturers. Manufacturer: China. Product Category: Drones & Quadcopters > Drone Components > Drone Spare Parts.
The insulation rings provide reliable short-circuit protection, effective thermal insulation, and long-term operation thanks to their high-quality material. The gaskets do not have an adhesive layer, so they can be used in designs with special retainers, heat shrink tubing, or additional mounting if needed. Color: green, thickness: 0.3 mm. One sheet contains 100 pieces for each battery type, ensuring cost-effectiveness for mass servicing.
Key advantages:
- Short-circuit protection: yes;
- Effective thermal insulation: yes;
- High-quality material for long-term operation: yes;
- Versatile application: suitable for contact surfaces (positive contact for 21700, anode contact for 18650);
- Completeness: one sheet contains 100 pieces of each type.
Please note: the absence of an adhesive layer means that if the gaskets need to be fixed to the battery casing, it is recommended to use additional mounting means or heat shrink tubing. This set is ideal for battery restoration, mass servicing, and serial production of battery modules.
| Specifications | 21700 Li-ion | 18650 Li-ion |
|---|---|---|
| Battery type | 21700 Li-ion | 18650 Li-ion |
| Quantity per sheet | 100 pieces | 100 pieces |
| Short-circuit protection | Yes | Yes |
| Effective thermal insulation | Yes | Yes |
| High-quality material | Yes | Yes |
| Sheet dimensions (mm) | 20.5 x 11.5 x 0.3 | 17.8 x 10.5 x 0.3 |
| Gasket thickness (mm) | 0.3 | 0.3 |
| Adhesive layer | No | No |
| Additional applications | Positive contact | Anode contact |
| Color | Green | Green |
Package contents:
Insulation gaskets for 21700/18650 batteries — 1 sheet (100 pcs).
These rings are recommended for use in battery repair, when assembling battery packs, and for increasing contact reliability in mobile, electronic, and industrial devices. They ensure safe operation and ease of installation in serial production conditions. If you need an economical and effective solution for insulating 21700 and 18650 battery contacts, this set will be an excellent choice.
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