Product Description

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BFM® blanking caps can be used to prevent contamination during clean down or change-over. Made with our strong and transparent Seeflex material, meaning they are ideal for use as sight-glasses/inspection ports. They also protect products and prevent dust emission into the factory.

  • Useful in closed vessels where you require product flow visibility.

  • Can be used to close off parts of your equipment to prevent dust emission into the factory.
Key Features
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Can be used to seal off machinery to prevent dust emission into the factory

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Allows for visibility of product flow in closed vessels


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Physical properties
Seeflex -Ether-based thermoplastic polyurethane
Construction/ Finish
Wall Thickness (+/- 10%)
0.9 mm / 1/32 inch
Hardness (Shore A)
Tensile Strength (MPa)
Dust tight?
Operating Conditions
Max. Operating Temp
110ºC / 230ºF
Operating Temp Range
- 25 to 110 ̊C / - 13 to 230 ̊F
Surge Temp
120°C/ 248°F
Certification and Compliance
FDA 21 CFR 177.1680 & 177.2600 and USDA
3A Certified
Manufactured from 3A 20-27 certified Seeflex Material and the BFM® cuff and spigot system is a 3A certified 63-04 sanitary fitting.
EU Approved
(EC) 1935/2004, 2023–2006 & 10/2011
Atex Certified

IBExU tested. Approved for all dust explosion hazardous areas. Some restrictions apply.

Available Diameters
  • Ø100mm,
  • Ø125mm then
  • Ø150mm - 1,650mm (in 50mm increments).

(Max. for Tool Release is 650mm)

Applicable Connector Lengths
  • 30mm (1 3/16") only

If you are after a longer length, look at the Blanking Bin / Sock.

Available as Tool Release?
Yes to Ø650mm
Quick Access Port Option?

Hear from a BFM® fitting expert

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Listen to our Technical Lead, Matthew Bailey, speak in-depth about the features and benefits of our Blanking Cap & Blanking Bin.


Product Option

Tool Release (TR)

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For added security, this option has a significantly firmer snap-band that makes it virtually impossible to remove by hand and requires a specially shaped tool. 
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Getting Started with BFM® fittings

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We have Authorized Distributors who will help work through what you want to achieve and how BFM® fitting can improve your plant.

Blanking Cap Applications

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Blanking caps as container lids - red
Container Lid
Blanking Cap being used as a container lid. 
Blanking cap on pipe
Pipe End
Blanking Cap being used as a small batch collection point.
BFM blanking cap on dryer
Blanking Cap used to seal off a dryer.

Tips and Guides

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For some useful technical tips and information get you started with selecting the BFM® fitting system.

Installation Process

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Helpful information for the entire installation process, from measuring up for the initial welding of your spigots to snap-fitting your connectors.

Contact Us

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If you would like to discuss your unique application, please contact us and we'll help find a solution for you.