A Look at Sealcon Nickel Plated Brass Flex Fittings

October 10 2023

Major Electronix offers the full line of Sealcon nickel plated brass strain relief flex fittings, which come in a wide range of sizes. They are available in with NPT, PG, or metric thread types and come included with an O-Ring. Using a nickel-plated brass flex fitting ensures not only resistance to corrosion, but protection from kinking and chafing. The flex nut allows for movement and flexibility without risking damage to the cable.

The nickel-plated brass flex cable glands share several characteristics in common with the nylon plastic versions. They feature pull-out resistance, are submersible to 300 feet, and are liquid tight when used with the included O-Ring. The splines on Sealcon cord grips overlap, so the form seal stays attached to the fitting and the cable stays in place. The form seal is effective up to 150 PSI. Inserts can be switched out to accept a wider range of cable sizes. This includes standard or reduced inserts, as well as multi-hole inserts.

Sealcon’s nickel plated brass flex strain relief fittings range from PG 7 to PG 21, 3/8” NPT to 3/4” NPT, and M12 to M25. PG is a German thread type with a straight thread angle. It has a smaller depth and larger flank angle compared to NPT or metric. NPT stands for National Pipe Thread and is most common in the US. NPT threads are tapered at a rate of 1/16 to create a seal when tightened. Metric is the thread type used most often internationally. It is labeled by the diameter and pitch, in millimeters.

These flex nut cable glands are available in three versions: standard, elongated, and EMI/RFI proof. The elongated versions have a longer thread length than standard and are ideal in applications in which the fitting needs to pass through a thick wall. EMI/RFI proof versions are designed to meet the standards for electromagnetic interference and radio frequency interference protection. They work with shielded cable for reliable grounding. They are especially ideal in telecommunication, measuring, control panels, and traffic applications. The other types of nickel plated brass flex cord grips can be found in many different areas, including marine, robotics, packaging, security, and medical.