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With and Without Flanges. With and Without Nipples.

Transfer Port Caps


Transfer Port Caps


With and Without Flanges. With and Without Nipples.

Internal and external isolator port caps.

CBC Transfer Port Caps are available in standard diameters and various depths.

Transfer Port Caps


• With Flanges or Without

• With Nipples or Without

CBC Transfer Port Caps are made with 20 mil. vinyl and are available in standard diameters and various depths.


Photo shows sequence of an 18 inch diameter transfer port cap (flanged) with nipples being installed on a semi-rigid, germ-free isolator transfer port using a CBC Patent Clamp.

Above: The photo sequence above shows a 18" diameter transfer port cap (flanged) with nipples being installed on a semi-rigid, germ-free isolator transfer port using a CBC Patent Clamp.



CBC Transfer Port Caps:


Available in the following standard diameters:
8", 12", 18" and 24";

and the following depths:

  • 2" deep (with or w/o nipples and with or w/o flange)
  • 7 1/2" deep (with or w/o nipples and with or w/o flange)
  • 12" deep (with or w/o nipples and with or w/o flange)
  • Custom sizes(with or w/o nipples and with or w/o flange)

Download PDF list of Port Cap sizes and options:


NOTE: CBC will also manufacture custom port caps to meet a client's specific requirements.

Interal port cap with no flange and no nipple.

Above: Interal port cap with no flange and no nipple.

External port cap with no flange and with a nipple.

Above: External port cap with no flange and with a nipple.

Pictured on the left is a 20 mil. vinyl, external transfer port cap with a flange and with nipples. Pictured on the right is a 20 mil. vinyl, internal transfer port cap with a flange and without nipples.

Above: Pictured on the left is a 20 mil. vinyl, external transfer port cap with a flange and with nipples.

Above: Pictured on the right is a 20 mil. vinyl, internal transfer port cap with a flange and without nipples.

The CBC Difference

The CBC difference includes our original lap-seam sealing process and the use of 20 mil. polyurethane material that is almost indestructible and helps ensure against contamination due to accidental puncture or tear.

CBC uses a highly durable "lap seam" seal for the majority of our seams, and an even superior "cut/weld/strip seam" seal for high risk areas. Because your reputation, research or production should not risk being compromised!    (See, "Pull Test" and "Puncture Demonstration" videos below.)

Download a printable flyer about CBC's Transfer Port Caps. Click here to download flyer.

Download Printable Flyer

Download a printable flyer about the CBC Transfer Port Caps.

Download Printable PDF

Download Printable (EU) PDF

The CBC Lap-Seal Seam "Pull" Test

Single Seam Seal vs. CBC Lap Seal Seam  Read more

Because your reputation, research or production should not risk being compromised!
20 mil. Polyurethane Puncture Demonstration

CBC's 20 mil. polyurethane material is almost indestructible and helps ensure against contamination due to accidental puncture or tear.  Read more

Because your reputation, research or production should not risk being compromised!

Accessories and Components:

Neoprene Stoppers.
Neoprene Stoppers

1" neoprene stoppers.  Read more

Used for plugging port caps, transfer sleeves and shipper sleeve.
CBC Patent Clamp for quick attaching transfer port caps.
CBC Patent Clamp

CBC's Patent Clamp for quickly, and securely attaches transfer port caps.  Read more

Patent Clamp with neoprene-gooved band reduces need for vinyl tape
Internal Transfer Port Cap Bands Made of 100% Silicone.
Internal Transfer Port Cap Bands

Available in 12" and 18" sizes. Will hold up to sterilants better then conventional rubber bands.  Read more

100% Silicone
Rubber bands for filter stands and inside transfer port caps.
Rubber Bands

Available in 5", 12" and 18" sizes.  Read more

For Filter Stands and Attaching Transfer Port Caps.
Transfer Sleeves used for isolator to isolator attachments and sterilizing cylinder to isolator connections.
Sterilizing Autoclave Cylinder for water, bedding, cages and other components used in animal research.
Pre-cut filter media for sterilizing cylinders and isolator filters.
Stainless steel, acrylic polypropolene transfer ports.
Transfer port caps with and without flanges.
Transdisk allows you to transfer mice without a transfer sleeve.
Original lap-seam seal flexible film, germfree isolator.
Manufacturing high quality, flexible film isolators for universities, researchers and germ-free animal producers since 1978.
CBC Transfer Port Caps are made with 20 mil. vinyl and are available in standard diameters and various depths.

Pictured above is an external (Flanged) Port Cap with nipples.

Made with 20 mil. vinyl.

CBC Transfer Port Caps are available in standard diameters and various depths.

Send Us a Message


Class Biologically Clean is a manufacturer of flexible film isolators for gnotobiotic reasearch.

Protecting Both Research and Researchers

Animal Research Gnotobiotic Isolators   |   Bio/Pharmaceutical Barrier & Containment Isolators

608.273.9661 ●
810 Stewart Street, Madison, Wisconsin 53713 ●
info@cbclean.com

Email CBC.
© 2011-2022 Class Biologically Clean, Ltd. - Madison, Wisconsin - All rights reserved

® CBC is a Registered Trademark of Class Biologically Clean, Ltd.


Flexible Film Isolators, Softwall Cleanrooms, Containment Units and Accessories for Controlled Research Environments.