Caps, Screw Top, with Natural Silicone Rubber / Natural PTFE Septa, bonded in knurled polypropylene, White Caps. For use with 24-414mm threaded EPA Style vials. ND24 threads. BASIK Brand. 100/PK.
Additional Info:
Provide dependable sealing and injection performance with screw top caps designed for EPA style vials used in both analytical and storage workflows. Manufactured with bonded silicone rubber / PTFE septa, these caps offer a durable and chemically resistant sealing interface for a wide range of laboratory applications. The knurled polypropylene construction ensures secure handling and consistent torque during closure.
97041-SC24 caps feature a 3.18 mm (0.125″) thick septa, providing durability and extended performance during repeated needle penetrations or long‑term storage. The bonded septa design improves sealing integrity by preventing septa dislodging during use. The 12.5 mm center hole allows consistent needle access, making these caps suitable for autosampler applications as well as secure storage of samples.
These caps are compatible with 30 mL, 40 mL, and 60 mL EPA style vials using ND24 (24‑414) threads, offering flexibility across multiple vial sizes. They are well suited for laboratories requiring reliable caps for both analytical injection and long‑term containment.
Key Benefits
Bonded septa improves sealing integrity and durability
3.18 mm thick septa supports repeated injections and storage
PTFE/silicone construction offers chemical resistance and flexibility
12.5 mm opening allows reliable needle targeting
Knurled cap design improves grip and handling
Compatible with multiple EPA vial sizes (30, 40, 60 mL)
Suitable for both autosampler use and storage applications
Typical Applications
EPA and environmental testing
HPLC and LC‑MS sample preparation
Autosampler injection workflows
Sample storage and transport
Routine laboratory analysis
Specifications
Cap Type: Screw Top
Thread Size: ND24 (24‑414)
Cap Material: Polypropylene (knurled, white)
Septa: Natural silicone rubber / natural PTFE (bonded)
Septa Thickness: 3.18 mm (0.125″)
Opening Size: 12.5 mm center hole
Pack Size: 100 caps
Compatibility
Designed for ND24 (24‑414) EPA style vials
Compatible with 30 mL, 40 mL, and 60 mL EPA vials
Suitable for autosampler and storage applications
Performance and Design Notes
Bonded septa reduces risk of septa push‑through
Thick septa enhances durability for repeated use
PTFE layer minimizes analyte interaction
Designed for consistent sealing and injection performance
Important Notes
Ideal for dual use: autosampler injection and storage
Compatible with EPA style workflows and methods
Designed for reliable sealing across multiple vial volumes