Kirby Morgan recently announced a product update affecting current KMDSI helmets and BandMasks. Bulletin #5 of 2026 introduces a new stainless steel bent tube assembly that will replace the previous chromed brass version on current models, with the exception of the KM Diamond.
This is not a procedural change for daily users or service technicians, but it is worth understanding because the bent tube is part of the breathing gas delivery path on Kirby Morgan helmets and masks. It is one of those components that may not get much attention until inspection, service, or replacement time.
According to Kirby Morgan, the change is being made to improve structural durability, corrosion resistance, and overall service life. As remaining chromed brass stock is used up, the stainless steel version will become the standard part for current KMDSI helmets and BandMasks.
For the KM Diamond, Kirby Morgan also noted a manufacturing process update to the 555-074 KM Diamond Bent Tube. The surface finish has changed, but the part number, specifications, and function remain the same.
For working divers, tenders, and equipment managers, the practical takeaway is straightforward: this is a material and finish update, not a change in how the equipment is maintained. Kirby Morgan states that there are no changes to service and maintenance procedures.
That said, this is a good reminder to pay attention to breathing gas path components during routine inspection and annual service. Bent tubes, O-rings, fittings, and related components should always be inspected for damage, corrosion, wear, improper assembly, and signs of impact or abuse. A small part in the gas path can become a serious operational issue if it is neglected.
It is also important to confirm that replacement parts are genuine Kirby Morgan parts and sourced through authorized channels. Kirby Morgan specifically reminds customers to purchase through authorized Kirby Morgan dealers.
At Ocean Eye, we follow Kirby Morgan product bulletins and service updates closely because these changes matter in the real world. A change like this may not require a new procedure, but it does affect what parts customers may see during future service, repair, and replacement work.
If your helmet or BandMask is due for inspection, service, or parts replacement, this is a good time to review the condition of the bent tube assembly and related breathing gas components.