What are the exact dimensions of the 20ml and the 30ml vial: diameter and height?

I do no know, I purchased the 10ml vials. It says 50 x 22 mm on the box.

Does the rubber seal on the inside of the vial have a small gap in the rubber to allow all of the med to be drawn up, or is it continuous on inside?

I've never seen what you mention. The rubber is a one piece seal with no holes. When you insert a syringe into it, it makes a hole, however, it seals up (this is the self healing feature they're talking about). So you tear the plastic cap off permanently, which exposes the rubber seal. It seals up so tight, that the contents can not escape even when upside down.

For the seller: What is meant by "self-healing"? I've never seen that before, aren't all multi-dose vials just made from identical butyl rubber?

Yeah it’s just like every other vial. Normal rubber tops

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Description

🧬 Elevate your lab game with sterile precision and smart design!

REUSABLE RELIABLE - Durable glass construction designed for multiple uses, combining sustainability with high performance.
PRECISION 5 ML CAPACITY - Perfectly sized glass vials for accurate sample storage and handling in professional lab settings.
INNOVATIVE SELF HEALING PORT - Officinal PTFE-coated injection port that reseals after each use, minimizing contamination risk.
SECURE FLIP OFF ALUMINUM CAP - Easy-to-remove yet tamper-evident aluminum-plastic cover ensures sample integrity and quick access.
STERILE CONFIDENCE EVERY TIME - Individually steam-sterilized at 121°C for 20 minutes with a clear sterilization indicator for guaranteed purity.

Ks-Tek Sterile Empty Vials are 5ml glass bottles featuring steam sterilization at 121°C, a self-healing PTFE-coated injection port, and a flip-off aluminum cap. Individually packaged for guaranteed sterility, these reusable vials are ideal for professional laboratory and scientific sample storage, ensuring contamination-free handling every time.

Specifications

Brand	Ks-Tek
Material	aluminum
Bottle Type	Glass Bottle
Colour	Purple
Capacity	5 Milliliters
Special Feature	Self Healing Injection Port
Product Care Instructions	Handle with Care
Recommended Uses For Product	Laboratory or scientific applications where sterile sample storage and handling are required
Number of Items	10
Reusability	Reusable
Shape	Cylindrical
Net Quantity	10.0 count
Item Weight	0.12 Kilograms
Manufacturer	Ks-Tek
UPC	761412515376
Model number	KSUS-SEV-M
Item Weight	119 g
Package Dimensions	10.5 x 8.5 x 7.4 cm; 119 g
Item model number	KSUS-SEV-M
Are batteries included?	No

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