300pcs 13mm 13-425 Solid Top Black Caps w/ PTFE/Silicone Septa for 4mL Vials For Sale

Ensure secure storage and superior sealing for your laboratory samples with our premium 13mm 13-425 solid top screw caps. Designed specifically for standard 4mL screw-thread vials, these caps are engineered with a high-quality dual-layer septa to maintain optimal sample integrity during long-term storage.

Key Features & Applications:

• Secure Storage: The solid/closed-top design (without a needle hole) makes these caps ideal for secure sample sealing and safe long-term storage.

• Superior Chemical Resistance: The inner Nature PTFE layer directly contacts the chemical sample, providing exceptional chemical compatibility and resistance.

• Tight Sealing: The Nature Silicone layer offers excellent elasticity and resilience, ensuring a reliable, leak-proof seal.

• Versatile Lab Use: Perfect for analytical laboratories, chemical storage, environmental testing, and general scientific research.

Detailed Specifications:

• Product Type: Screw cap with septa (Solid / Closed top)

• Closure/Neck Finish: 13-425 (13mm thread)

• Septa Size: 13mm x 1.5mm

• Cap Material: High-quality Polypropylene (PP) plastic

• Septa Material: Nature PTFE layer & Nature Silicone

• Cap Color: Black

Available Pack Options:Select the quantity that best fits your laboratory workflow from the drop-down menu:

• 300 pcs

• 500 pcs

• 1000 pcs

Important Notes Before Purchasing:

• For Laboratory Use Only: These products are strictly intended for scientific laboratory research and sample storage. Not for medical, hypodermic, or injection use.

• Caps Only: This listing is for the caps with septa only. Glass vials are not included and must be purchased separately.