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About 502, Instant Adhesive, Fast‑Curing Adhesive & Super Glue
21 Oct 2026
Q: Are 502, instant adhesive, fast‑curing adhesive and super glue the same product?
A: In daily life, people often use these terms interchangeably. However, they are partially overlapping yet not completely identical.
Q: What is 502 glue?
A: 502 was originally a well‑known Chinese adhesive brand developed by Ge Zengbei in 1964. Its main chemical component is ethyl α‑cyanoacrylate, which falls under cyanoacrylate adhesives. Due to its huge market popularity, “502” has become a popular generic name for this category of adhesives. Strictly speaking, 502 is a brand name, and the formal chemical name for this type of glue is cyanoacrylate adhesive.
Q: What does instant adhesive mean?
A: Instant adhesive is a common industry term referring primarily to cyanoacrylate adhesives. It cures within seconds to tens of seconds at room temperature when exposed to trace moisture in air. ‑ Curing mechanism: Anionic polymerization initiated by water molecules from the air ‑ Typical curing time: 5‑30 seconds (varies by brand and substrates) ‑ Common variants: Ethyl cyanoacrylate (e.g. 502), butyl cyanoacrylate (improved toughness)
Q: What is fast‑curing adhesive?
A: Fast‑curing adhesive is a broader general term for all adhesives with short curing time. It covers not only cyanoacrylate instant adhesives, but also certain acrylic structural adhesives, modified epoxy fast‑curing adhesives, partial UV‑curing adhesives and more. In short, instant adhesive is one type of fast‑curing adhesive, but not all fast‑curing adhesives are instant adhesives.
Q: What is super glue?
A: “Super glue” is a descriptive name for high‑strength adhesives, rather than a specific chemical category. Super glue products may include cyanoacrylate adhesives (e.g. 502), epoxy (AB glue), polyurethane adhesives, acrylic structural adhesives and others. Super glues of different chemistries have big differences in performance and application scope.
Q: How to select the right adhesive?
A: ‑ For simple household repairs: Standard 502 is sufficient. ‑ For industrial production & high aesthetic requirements: Choose modified industrial instant / fast‑curing adhesives with low‑bloom, toughened formula, high bonding strength and good heat resistance. Ordinary 502 is not recommended. ‑ For products labeled “super glue”: Always check product datasheet to confirm adhesive chemistry before use.
Q: What are the specifications of KL‑363‑1 fast‑curing adhesive?
A: ‑ Product Name: KL‑363‑1 Fast‑Curing Adhesive ‑ Product Introduction: One‑component acrylic fast‑curing adhesive featuring high bonding strength and fast room‑temperature cure. ‑ Key Features: Low blooming, fast curing, good penetration, high bond strength, heat resistance up to 100‑120℃, wide substrate compatibility. ‑ Applications: Bonding for metal, rubber, plastics, foam materials and multiple other substrates.
