16PCS 3ml Vial Caps for Glass Vials, Silicone Protective Cover for Injection/Peptide 3ml, Reusable Vial Lids Leak-Proof, Dust-Resistant – 10 Colors

Description

Product Overview

Palksky presents a premium set of 16 silicone vial caps specifically designed for 3ml glass vials with a 0.8‑inch (20mm) diameter. Each cap is molded from food‑grade silicone that offers exceptional flexibility, allowing it to stretch and return to shape without tearing. The material endures extreme temperature ranges from -40°C to 230°C, making it suitable for both cryogenic storage and high‑heat applications. The caps feature a precision‑engineered inner lip that creates a tight seal, preventing leaks, dust ingress, and volatile evaporation. With a total package weight of 1.45 ounces and compact dimensions of 3.9 x 3.14 x 0.5 inches, the set is easy to store and transport.

One of the standout features of this product line is the ten‑color coding system. Each cap is available in a distinct, fade‑resistant hue—red, blue, green, yellow, purple, orange, black, white, gray, and pink—enabling rapid visual identification of contents. This color‑coding capability is especially valuable in multi‑user environments such as research laboratories, educational institutions, and home chemistry setups where quick differentiation reduces the risk of cross‑contamination.

The caps are fully reusable, eliminating the need for disposable plastic alternatives and contributing to a more sustainable laboratory practice. Their leak‑proof design complies with standard safety protocols for handling injectable solutions, peptides, essential oils, and other sensitive chemicals. The product is listed under the Industrial & Scientific category, specifically within Lab & Scientific Products > Glassware & Labware > Caps, and holds a competitive Best Sellers Rank of #70 in Labware Caps.

Usage

These silicone caps are ideal for a wide range of applications. In professional research labs, they provide a reliable seal for storing peptide solutions, enzyme reagents, and volatile solvents, ensuring sample integrity over extended periods. The temperature resilience allows users to safely freeze samples at -20°C or store them at elevated temperatures during incubation without compromising the seal.

Educational settings benefit from the caps’ durability and color‑coding, which simplify teaching experiments involving liquid handling, solution preparation, and safety demonstrations. Students can easily match caps to specific reagents, reducing errors and reinforcing best practices in laboratory safety.

Home hobbyists and DIY formulators also find value in these caps for preserving essential oils, cosmetic ingredients, and small‑batch chemical mixtures. The dust‑resistant seal protects against environmental contaminants, while the reusable nature aligns with cost‑effective, eco‑friendly project management.

Why Choose Us

Palksky is a recognized brand in laboratory accessories, known for rigorous quality control and consistent product performance. Each silicone cap undergoes a multi‑stage testing process that includes tensile strength assessment, leak detection under pressure, and temperature cycling to verify durability. This commitment to quality ensures that users receive a product that meets or exceeds industry standards for safety and reliability.

Our caps are manufactured in facilities that adhere to ISO 9001 certification, guaranteeing traceability and adherence to strict manufacturing protocols. The food‑grade silicone composition is free from harmful additives, making the caps suitable for pharmaceutical and nutraceutical applications where purity is paramount.

Customer support is a core component of the Palksky experience. We provide responsive after‑sales assistance, including guidance on proper cap installation, troubleshooting for seal integrity, and a straightforward replacement policy should any defect arise. Our dedication to service reinforces confidence in the long‑term value of the product.

Key Features

• Premium food‑grade silicone delivers superior flexibility and temperature resistance.
• Leak‑proof, dust‑resistant seal protects sensitive samples from contamination.
• Ten vibrant, fade‑resistant colors enable instant visual identification and organization.
• Reusable design reduces waste and lowers long‑term operating costs.
• Dedicated Palksky customer support ensures quick resolution of any issues.

FAQ

What vial sizes are compatible with these caps?

The caps are engineered to fit 3ml glass vials with a 0.8‑inch (20mm) diameter opening, which is the standard size for many peptide and injection bottles.

Can the caps withstand extreme temperatures?

Yes. The silicone material is rated from -40°C to 230°C, allowing safe use in both freezing and high‑heat environments without loss of seal integrity.

How many times can the caps be reused?

When maintained properly—cleaned with mild soap and dried thoroughly—the caps can be reused indefinitely, making them a cost‑effective alternative to disposable lids.

Are the colors fade‑proof over time?

Each cap is dyed with UV‑stable pigments that resist fading, ensuring the color coding remains clear even after prolonged exposure to light and laboratory conditions.

What is the return policy if a cap is defective?

Palksky offers a 30‑day replacement guarantee for any caps that arrive damaged or fail quality checks. Contact our support team with the order details, and we will arrange a prompt replacement.