3 of 3 Items
3 of 3 Items
An air window seal cutter (also called an auto glass air knife or pneumatic window seal cutter) is a specialised compressed-air powered tool used to cut through adhesive, rubber seals and bonded windscreen/glass seals when removing or replacing vehicle windows. It’s a common tool in automotive glass workshops and body repair shops because it makes the job faster, cleaner and safer than using hand knives or scrapers.
• The tool connects to a standard air compressor and uses high-speed oscillation (often around 20,000 movements per minute) to rapidly move a blade back and forth. This motion lets the cutter slice through glue, butyl or rubber seals around windscreen and window edges with less effort and greater precision.
• Blades are selected based on the shape and type of seal or adhesive — often including straight, curved or offset shapes — to suit different vehicle models.
• Removing glued or bonded windscreens during replacement or repair.
• Cutting and trimming rubber window seals and weatherstrips without damaging surrounding metal or paintwork.
• Preparing the window frame by clearing adhesives cleanly for installation of new glass.
✔ Faster and more efficient than manual cutting tools — especially on tough adhesives.
✔ Cleaner cuts with better control to avoid damage to glass or vehicle panels.
✔ Lightweight and ergonomic designs reduce fatigue in workshop environments.
An air window seal cutter is a pneumatic oscillating cutting tool that makes removing and trimming windscreen seals and adhesives quicker, cleaner and more precise — ideal for professional auto glass replacement work.
Gison Air Knife GP-931 – professional compressed air knife with 20,000 oscillations/min and balanced performance.
Air Knife Blades – 57mm standard and 90mm extended replacement blades for precision air flow.
Each tool is designed for durability and performance in demanding pneumatic environments and workshop use.
NZ-Focused Selection: Tools tailored to workshop and industrial needs across New Zealand.
Reliable Performance: Products built for long-term operation with consistent airflow output.
Fast Delivery: Efficient dispatch to Auckland and nationwide.
Expert Support: Guidance on choosing the right pneumatic tools for your application.
Q: What is the Gison Air Knife GP‑931?
A: The Gison Air Knife GP‑931 is a pneumatic air window seal cutter / auto glass air knife designed to help remove glued automotive windscreens and rubber seals efficiently using a high‑speed oscillating air‑powered cutter.
Q: How does the GP‑931 work?
A: It oscillates at around 20,000 movements per minute, using compressed air to power a blade that helps cut through adhesive and remove window seals without excessive force. The airflow and vibration aid fast, controlled removal.
Q: What’s the main use of this tool?
A: It’s mainly used to remove glued windscreens and automotive glass seals — speeding up removal tasks in car repair and glass replacement operations.
Q: Is the GP‑931 easy to handle?
A: Yes — at about 1 kg with a compact head height of 70 mm, it is designed for prolonged use with minimal fatigue.
Q: Do I need a special compressor?
A: You just need a standard workshop air compressor capable of delivering around 90 psi of air pressure with adequate airflow for optimal performance.
Q: Can I swap blades on the GP‑931?
A: Yes — different shapes and sizes of scraper blades can be fitted to suit different adhesive and glass edge profiles.
Q: Is the GP‑931 suitable for other uses beyond windscreens?
A: While optimized for automotive glass and seal removal, it can also assist in other similar tasks requiring precise pneumatic cutting where a high‑speed oscillating blade is useful.