Battery Insulator Gasket Ring 18650 32700

Protect your custom lithium battery pack from short circuits with this Insulation Gasket, a hollow adhesive ring designed to cover the positive terminal of cylindrical cells before pack assembly. Cut from thin, durable barley paper cardboard, this gasket provides a reliable insulating barrier that prevents accidental contact between the cell’s positive terminal and surrounding conductive materials like nickel strip, busbars, or neighboring cells.

The self-adhesive backing makes application quick and mess-free, simply peel and stick directly onto the terminal end of the cell before welding or soldering connections. Its hollow center leaves the terminal itself exposed for spot welding or soldering nickel strip, while the surrounding ring insulates the surrounding metal can from unintended contact. This insulation step is a standard, essential part of safe battery pack construction, particularly important in packs carrying multiple cells in series or parallel where a short circuit risk is higher.

This insulator gasket is a must-have for hobbyists and builders assembling custom battery packs for power tools, e-bikes, flashlights, solar storage, and other lithium-ion or LiFePO4 applications. Available sized for both 18650 and larger 32700 format cells, it’s an inexpensive but critical safety component in any DIY battery pack build, helping avoid short circuits during and after assembly.

Specification:

• Material : Barley Paper (Adhesive Cardboard)
• Type : Hollow Ring, Self-Adhesive
• Application : Positive Terminal Insulation