1207 Series 3-Ply Exhaust Capsules & Expansion Joints

The Keflex™ 1207 Series 3-Ply Exhaust Capsule is an economical, durable exhaust connector designed for marine, industrial, and diesel engine applications. Constructed from 3-ply stainless steel bellows and available as bellows-only or fully welded assemblies, the 1207 Series provides exceptional flexibility and vibration isolation at an affordable price.

Ideal for generator sets, marine propulsion, and OEM exhaust systems, this versatile series supports a variety of vessel types, including tugs, ferries, charter boats, fishing vessels, and utility craft. The 1207 Series is the go-to replacement bellows for standard diesel engine exhaust systems requiring long life and reliable thermal movement control.

Features & Benefits


Economical 3-Ply Design – Cost-effective stainless-steel bellows engineered for long-lasting flexibility and vibration resistance.
Superior Fatigue Performance – Three-ply construction provides greater cycle life and lower spring rates than single-ply OEM replacements.
Custom Lengths Available – Fabricated to order in standard or custom lengths and end configurations.
Multiple Material Options – Offered in T-304, T-316, and T-321 stainless steel, as well as Inconel 625 and Monel 400 for corrosive or marine environments.
No Minimum Order – Ideal for replacement or small-batch production needs; available for stocking distributors.
All-USA Components & Construction – Manufactured in the United States with domestically sourced materials.
Quick Ship Availability – Standard sizes available for rapid turnaround to minimize vessel downtime.
ABS Certified – Meets ABS requirements for marine and offshore exhaust applications (Cert. #14-HS1275455-PDA).

Applications


– Generator sets
– Marine propulsion exhaust systems
– Power units
– OEM and custom exhaust assemblies
– Diesel engine exhaust replacement bellows

Markets Served


– Marine and shipbuilding
– Power generation and utilities
– Offshore and oil platform support vessels
– Transportation and heavy equipment
– OEM engine manufacturing and repair

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Need a custom flexible metal solution?

If your system requires non-standard movement, pressure, or connection configurations, Flex-Weld engineers can design and fabricate custom expansion joints, metal bellows, and flexible hose assemblies to your exact specifications. We’ll tailor materials, end fittings, ply count, and cycle life to meet your application—whether it’s HVAC, power generation, chemical processing, or aerospace.

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