Battery Insulation Gasket Tape 18650 21700 26650 PET Fish Paper

SEamopar Barley Paper Insulation Gasket Tape for Lithium Battery Packs

Keep your lithium cell packs safe and stable with this high-quality PET barley fish paper insulation tape. Engineered for 18650, 21700, and 26650 battery formats, this adhesive insulating gasket sheet provides a reliable barrier against electrical shorts, heat transfer, and mechanical vibration — essential for DIY battery builders, e-bike enthusiasts, and electronics hobbyists alike.

Key Features

• Material: PET (Polyethylene Terephthalate) insulated green shell barley paper
• Thickness: 0.2 mm — ultra-thin yet highly effective
• Width: 120 mm — covers standard cell pack widths
• Length: 1 metre per pack
• Self-adhesive backing for quick, secure application
• Provides electrical insulation, shock resistance, and heat insulation
• Compatible with 18650, 21700, and 26650 lithium cell packs
• No high-concern chemicals — safe for DIY battery assembly

What's in the Box?

• 1 × Barley Paper Insulation Gasket Tape (1 metre length, 120 mm width)

Specifications

Who Is This For?

Whether you're assembling a custom e-bike battery, building a DIY power bank, or repairing an existing lithium cell pack, this insulation gasket tape is a must-have component in your toolkit. Its strong adhesive backing ensures it stays in place during assembly, while the PET film layer guards against accidental short circuits.

Looking for more tools and supplies for your projects? Check out our 1/2" Drive 8-Piece Hex Short Socket Set – Vanadium Steel and our 10-Pc Hex Nut & Bolt Extractor Kit to complement your build setup.

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: Is this barley paper insulation tape compatible with 21700 and 26650 cells as well as 18650?

A: Yes! The tape is 120 mm wide and 0.2 mm thick, making it suitable for 18650, 21700, and 26650 lithium cell pack formats. Simply cut to the size you need during battery assembly.

Q: Does the insulation tape have a self-adhesive backing?

A: Yes. This PET barley fish paper gasket tape features an adhesive glue backing that bonds securely to battery cells and pack housings, ensuring it stays in place throughout the assembly and operation of your battery pack.

Q: How much tape is included in one purchase?

A: Each package includes 1 metre (100 cm) of insulation tape, 120 mm wide and 0.2 mm thick — enough for multiple battery cells or a full small pack assembly.

Q: Is this tape safe for DIY lithium battery projects?

A: Yes. The SEamopar barley paper insulation gasket tape contains no high-concern chemicals and is made from PET material, which is widely used in electronics insulation for its durability, electrical resistance, and heat-resistance properties.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.