What material are BFM® fittings?
BFM® manufactures connectors in a variety of media to suit a wide range of applications. BFM® connectors are available in non-permeable and breathable materials.
Non-permeable connectors are available in Seeflex media for applications with movement, or PTFE laminate for high temperature applications that can be used across the full pH scale.
Breathable connectors are available in woven polyester, polypropylene, or PTFE, suitable for higher temperatures, lower temperatures, or chemical applications respectively.
What is BFM® material?
BFM® fitting's most popular and versatile material is the non-permeable Seeflex range of connectors that are made from clear, ether based polyurethane. This material has no memory and will not fracture with flexing. This means they are able to withstand movement such as compression, oscillation, and vibration.
Download a PDF of BFM Product Range
| Seeflex 040E | Seeflex 040AS | Seeflex 020E | LM4 | LM3 | Teflex | 060ES | WM12K (Kevlar) | |
|---|---|---|---|---|---|---|---|---|
| Material: | Ether based urethane | Ether based urethane | Ether based urethane | 100% Polyester | 100% Polypropylene | 100% Teflon PTFE | Polyurethane w/ polyester scrim | Kevlar |
| Color: | Transparent | Transparent | Transparent | White | White | Brown/Natural | White | Yellow |
| Temperature resistance (Continuous) | -25 - 110°C | -25 - 95°C | -25 - 110°C | 130°C | -70 - 94°C | 260°C | -25 - 120°C | 260°C |
| (Surge Temperature) | 120°C | 120°C | 150°C | 107°C | 280°C | 300°C | ||
| FDA Approved* | CFR 21 177.1680 & 177.2600 | CFR 21 177.1680 & 177.2600 | CFR 21 177.1680 & 177.2600 | CFR 21 Part 177 | CFR 21 177.1520 | CFR 21 177.1550 | CFR 21 177.1680 & 177.2600 | FDA 21 177.1632 |
| 3A Certified* | Yes (20-) | Yes (20-) | Yes (20-) | |||||
| EU Approved* | EC 1935/2004 & 10/2011 | EC 1935/2004 & 10/2011 | EC 1935/2004 & 10/2011 | EC 1935/2004, 2023–2006 & 10/2011 | ||||
| ATEX Certified* | Approved for all dust-ex zones. Some restrictions for gas-ex zones. | Approved for all dust-ex zones. Some restrictions for gas-ex zones. | Approved for all dust-ex zones. Some restrictions for gas-ex zones. | Approved for all dust-ex zones. Some restrictions for gas-ex zones. | Approved for all dust-ex zones. Some restrictions apply. | |||
| Thickness | 0.9mm | 0.9mm | 0.5 mm | 1.3mm | ||||
| Application | Media to cover most applications. Superior Strength and abrasion resistance. Greater resistance to chemical and UV conditions as well as liquid and CIP. | Media to applications where static is a problem. Useful in applications with explosion risks and for metal detection. | Best for specialized weighing applications; minimal weight transmission due to lighter weight fabric and increased Flexability. | Perfect when some Breathability is required to alleviate pressure. Used for higher temperature Environments (temperatures up to 130 C) | LM3 Connectors have introduced to the BFM range for low temperature applications. | For example Temperatures and highly resistant also against alkalis/ acidic/ caustic products. | Pressure-resistant Seeflex 060ES is a clear, ether-based thermoplastic polyurethane alloy with an internal polyester scrim.
Overpressure situations for continuous pressure up to 1.7 bar The internally bonded scrim restricts the Seeflex sleeve from stretching and provides superior pressure resistance. |
Kevlar is typically used in over pressure and potentially explosive applications. The BFM WM12K (Kevlar) Cover is designed to fit over existing connectors and can be tightened onto the BFM Spigot using the butterfly mechanism at the top and the base of the connector. It is very easy to install and remove, no tools required. |
| Tensile Strength (MPa) | 40 | 37 | 58 | 47 | ||||
| Ultimate Elongation (%) | 593 | 450 | 548 | 12.5 | ||||
| Tear Strength (N) | 67 | 51 | 24 | 131 | ||||
| 100% Modulus (MPa) | 8 | 7.5 | 8.3 | 12.5 | ||||
| 300% Modulas (MPa) | 15.6 | 11.7 | 18.3 | |||||
| Conductivity | Resistance (Ohms) 10^10 | Resistance (Ohms) 10^8 | Resistivity (Ohms/cm^3) 10^10 | Resistivity (Ohms/cm^3) 10^10 |