Product Details
- Manufacturer
- JG Finneran Associates™
- SKU
- 10700862
About this product
Screw Caps
Description:
Screw caps are threaded closures designed to seal containers such as bottles, vials, tubes, or jars. They are used across labs, manufacturing, and storage environments to ensure secure, leak-proof containment of liquids, powders, or samples. They come in various materials, liner types, and thread standards (e.g., GL45, GL18).
📐 Specifications:
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Materials:
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Polypropylene (PP) – autoclavable, chemical-resistant, lightweight
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Polyethylene (PE) – economical and flexible, not always autoclavable
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Phenolic resin – high temperature and chemical resistance
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Metal (aluminum/stainless) – for industrial/chemical use
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Sizes (thread types):
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Standard thread types: GL25, GL32, GL45, GL80, or custom
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Diameter ranges: 13 mm to 120+ mm
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Liner Options:
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PTFE/Silicone – for aggressive chemicals or air-tight sealing
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Polyethylene Foam – general-purpose seal
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Rubber or Teflon-faced rubber – for analytical uses
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Colors: Often color-coded for identification
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Autoclavable: PP and some others, depending on material
🧪 Uses:
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Sealing laboratory bottles, tubes, vials
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Chemical storage in reagent or sample bottles
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Transporting liquids safely without leaks
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Preventing contamination of sterile samples or reagents
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Color-coded systems for reagent or sample differentiation
Features
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✅ Threaded Design: Ensures secure, reusable seal
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✅ Leak-Proof & Airtight: With compatible liners or gaskets
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✅ Chemically Resistant: Available materials handle acids, solvents, bases
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✅ Reusable: Most lab-grade screw caps are durable and autoclavable
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✅ Variety of Sizes: Fits vials, bottles, and tubes of many volumes
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✅ Optional Vented Caps: For sterile filtration or gas exchange
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✅ Color-Coded Options: Simplifies identification and organization
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✅ Wide-Mouth or Narrow Options: For easy pouring or precise control
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