Seals (Caps)

The seals (or "caps") on this page are meant for closing serum vials. A septum (or stopper) is placed on the neck of the vial, a seal is placed on top, and the seal is fastened with a crimping tool.

Seals come in a variety of styles and colors. Of the kind we offer (or can sometimes get)

  • "Flip Off" style has a plastic disc on top which, when pushed away, tears open a small hole in the cap exposing the center of the septum.
  • "Center Tear off" are aluminum seals formed so the center area of the top can be pried out, exposing the septum.
  • "Total Tear Away" are aluminum seals formed so the entire cap can be torn away without requiring a decapping tool. The septum may then be removed to expose the open vial.


Flip-Off Seals 20mm

Black 20 mm Flip-off seals 20FOBLACK
20mm Flip Off Crimp Seals, Black
$12.99 per 100, lots (59 in stock)
Dark Blue 20 mm Flip-off seals 20FODKBLUE
20mm Flip Off Crimp Seals, Dark Blue
$12.99 per 100, lots (72 in stock)
Green 20 mm Flip-off seals 20FOGREEN
20mm Flip Off Crimp Seals, Green
$12.99 per 100, lots (89 in stock)
Grey 20 mm Flip-off seals 20FOGREY
20mm Flip Off Crimp Seals, Grey
$12.99 per 100, lots (38 in stock)
Light Blue 20 mm Flip-off seals
20mm Flip Off Crimp Seals, Light Blue
$12.99 per 100, lots (82 in stock)
Light Green 20 mm Flip-off seals 20FOLTGREEN
20mm Flip Off Crimp Seals, Light Green
$12.99 per 100, lots (86 in stock)
Medium Blue 20 mm Flip-off seals 20FOMDBLUE
20mm Flip Off Crimp Seals, Medium Blue
$12.99 per 100, lots (3 in stock)
Orange 20 mm Flip-off seals 20FOORANGE
20mm Flip Off Crimp Seals, Orange
$12.99 per 100, lots (82 in stock)
Pink 20 mm Flip-off seals 20FOPINK
20mm Flip Off Crimp Seals, Pink
$12.99 per 100, lots (23 in stock)
Red 20mm Flip-Off Seals 20FORED
20mm Flip Off Crimp Seals, Red
$12.99 per 100, lots (81 in stock)
White 20mm Flip-Off seals 20FOWHITE
20mm Flip Off Crimp Seals, White
$12.99 per 100, lots (49 in stock)
generic 20 mm Flip-Off seals 20FOYELLOW
20mm Flip Off Crimp Seals, Yellow
$12.99 per 100, lots (10 in stock)