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Flexible Vial Caps for Peptide, GLP-1 & Insulin Vials

Reusable Protective Dust Covers for 3ml, 5ml, 10ml, 30ml, 50ml & 100ml Vials

🔥 3,200+ sets sold
$9.99
  • Snug snap-on fit that stays put
  • Keeps dust & debris off your stoppers
  • Color-code & identify vials at a glance
  • Reusable — fridge & freezer safe
  • Ships in 24–48 hours
Color: Mix
Size
Small (3 mL) — peptides, GLP‑1, semaglutide, BPC‑157
Large (10 mL) — BAC water, testosterone, larger vials
The number (10 / 50 / 100) is how many caps are in the pack.
Quantity
🚚 Ships in 24–48 Hours
30-Day Returns
No questions asked
Secure Checkout
Your data is protected
Free Shipping
On orders over $49
Snug Snap-On Fit
Stays put on your vials
Dust Protection
Keeps stoppers clean
Color-Coded
ID vials at a glance
Reusable & Travel Ready
TSA friendly

Customer Reviews

Real, verified reviews and photos from VialCase customers.

Customer Reviews

Based on 447 reviews
95%
(424)
2%
(11)
1%
(5)
1%
(4)
1%
(3)
M
Mabel

Son perfectos me encantaron

ɢ
ɢᴀʀʀᴇᴛᴛ

Caps look great and fit perfectly! Highly recommend these to anyone wanting to protect their vials.

ɢ
ɢᴀʀʀᴇᴛᴛ

Caps look great and fit perfectly! Highly recommend these to anyone wanting to protect their vials.

ɢ
ɢᴀʀʀᴇᴛᴛ

Caps look great and fit perfectly! Highly recommend these to anyone wanting to protect their vials.

ɢ
ɢᴀʀʀᴇᴛᴛ

Caps look great and fit perfectly! Highly recommend these to anyone wanting to protect their vials.

Flexible Vial Caps are the original flexible protective caps designed for GLP-1, peptide, insulin, essential oil, and research vials. Trusted by tens of thousands of customers, these reusable caps help protect vial tops from dirt, dust, debris, scratches, and everyday handling during storage and transport.

Designed with a secure friction-fit, Vial Guard caps are easy to apply, remove, clean, and reuse while helping keep your vials protected and organized.

Key Features:
✅ Original Vial Guard™ flexible vial cap design
🔒 Secure friction-fit design
🛡️ Helps protect vial tops from dirt, dust, and debris
💎 Durable, flexible, reusable material
♻️ Easy to clean and reuse
🎒 Ideal for storage, travel, handling, and transport
🌈 Multiple color options for organization and identification

Available Sizes:
• 14 mm (0.55″)
• 20 mm (0.78″)

Compatible With:
• 3ml, 5ml, 10ml, 30ml, 50ml, and 100ml vials
• GLP-1, peptide, insulin, research, and essential oil vials
• All Vial Guard™ storage cases

Important Fitment Notice:
✔️ Designed for vials with 14 mm or 20 mm openings
⚠️ Please verify your vial’s top diameter before ordering
⚠️ Do not force onto incompatible vial sizes

Care Instructions:
🧼 Hand wash with mild soap and water
🚫 Not dishwasher safe

Disclaimer:
This product is a protective storage accessory only. No medical, pharmaceutical, sterility, or leak-proof claims are implied.

About “Blemished” Variations:
Blemished variations may contain minor cosmetic imperfections from manufacturing. These imperfections are cosmetic only and do not affect product functionality. Photos of individual blemished items are not provided, and each blemish may vary.

TypeVial Cap
BrandVial Guard
SKU10 mix small
Weight0.02 lb
Made ForPeptides, GLP-1, Research
ShippingFree over $49

Shipping

  • Free shipping on all orders over $49.
  • Made to order — ships in 24–48 hours.
  • Tracking provided on every order.

Returns

  • 30-day money-back guarantee — love it or return it.
  • No-questions-asked returns on unused items.
  • Contact us and we'll make it right.

Why VialCase vs. a Generic Box

Built for vials — not a repurposed tackle box.

FeatureVialCaseGeneric Storage Box
Custom-fit vial slots
Hard-shell impact protection
Fridge & freezer safe
Dedicated BAC water slot
Made in the USA
30-day money-back guarantee
1,400+ verified reviews

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Free Shipping
On orders over $49
30-Day Guarantee
Love it or return it
Secure Checkout
Your data is protected
1,400+ Reviews
Real verified Judge.me reviews