Reflecting resilience, the tensile strength of fiber optic connectors is expected to withstand at least 90N of force. US Conec's MMC connector is a Very Small Form Factor (VSFF) multi-fiber optical connector designed for termination of single-mode and multi-mode fiber cables up to 2. 5 mm (nominal) in outside diameter. The MMC connector employs the TMT ferrule technology having an alignment structure and optical. Simplex plug Engagement force: 19. Ferrule withdrawal force Extract zirconia gauge 2. Copper alloy split sleeve 2N to 5. Long strain relief boot assures that there are no performance losses when a pull force is applied in a vertical bend direction. The color of the boot identify the type of polishing: Blue: PC polishing Light purple: Advanced PC (AdPC) polishing Green: Angled PC polishing (APC) Other colors are also. This test method applies to optical fibre cables which are tested at a particular tensile strength in order to examine the behaviour of the attenuation and/or the fibre elongation strain as a function of the load on a cable which may occur during installation and operation.