Phenolic Resin Cover 28mm Polyester Seal Screw Caps Plastic Bottle Black Seal Caps for Daily Chemicals Cosmetics Crafts Industrial Uses-12 Pcs

About this item

• 【Premium Material】Crafted from durable phenolic resin cover material, this premium plastic bottle seal cap withstands intense fermentation pressure and harsh chemicals, ensuring long-lasting reuse and reliability.
• 【Leak-Proof Performance】Engineered with polyester seal screw caps technology, it self-adheres around the sealing area to prevent liquid leakage, carbonation loss, and gas escape, maintaining freshness for film development chemicals or CommScope tea fermentation.
• 【Food-Grade Versatility】Food-grade certified and ideal for pharmaceutical, cosmetic, and industrial uses, these bottle caps for crafts guarantee safe storage of daily chemicals, drugs, cosmetics, and food products.
• 【Extreme Durability】The thermosetting phenolic plastic bottle cap resists temperatures above 200°C, chemical corrosion, and volatility, delivering an ultra-tight seal for both soft/hard packaging bottles and hoses.
• 【Precision Fit】Designed for 28mm bottle mouths, it seamlessly fits Boston Round transparent/amber glass planting cups—perfect for DIY enthusiasts, craft projects, and professional applications requiring polyester seal screw caps.