Vial Stopper Caps

Snap-on silicone caps that cover the rubber stopper of a 3 mL or 10 mL vial between uses. Colour-coded so vials stay told apart.

Last edited 2026-09-28 · written by PepPrep

Fits 3 mL & 10 mL
Colour-coded
Reusable

What it’s for

Once the flip-top is off, the stopper sits bare in the fridge. A cap keeps dust off it and the colour tells you which vial is which without reading labels.

What to check in the listing

A cap keeps dust off — it does not replace wiping the stopper with alcohol before every draw. Buy the pack that matches your vial size; 3 mL and 10 mL necks are different and a loose cap is pointless.

At a glance

TypeStorage accessory

Used forHome storageUsed for lists the situations this product is for; the decision tool and the Finder match on these.

PriceBudgetPrice tier is the rough position within its category, not a live price: budget is the cheapest sensible option, premium costs more for a reason the page explains.

TravelCarry-on friendlyTravel says whether it is practical to fly with: carry-on means it goes through security without fuss.

SterileNoSterile means individually sealed and sterile until opened; anything that touches the inside of a vial or your skin should be.

ReusableYes

Specifications above were recorded from the Amazon listing on 2026-09-03. Listings change hands: open the listing for its current description, price and availability.

For where in a fridge this belongs and how to prove it actually stays cold, read How to Store Peptide Vials: Fridge, Light, Heat.

Category: Storage & Cold
Also useful: Build a full kit →

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Vial Stopper Caps

What it’s for

What to check in the listing

At a glance

Others in Storage & Cold

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