AIGI Environmental Inc.
AIGI Nickel Plated 17-7 Disc Springs
AIGI Nickel Plated 17-7 Disc Springs are live-loading springs for bolted joints in chemical environments, made from 17-7 stainless spring steel with a protective nickel-plated finish. They keep bolts tight and gaskets sealed while resisting the corrosion that shortens the life of ordinary springs.
Product Benefits
- Chemical resistance: Nickel plating protects against acidic and alkaline corrosion and stands up to prolonged exposure to halogens.
- Scratch-resistant surface: The special coating protects the spring surface from scratching, keeping its protection intact.
- Extended service life: Better corrosion resistance means the spring lasts far longer and holds its preload more reliably.
- Suited to cold service: The 17-7 grade reaches down to very low, cryogenic temperatures, making it the choice where joints run cold rather than hot.
Where It's Used
- Chemical and petrochemical plants: Flanged joints exposed to corrosive process fluids and atmospheres.
- Smaller bolting too: The range starts at smaller bolt sizes than the H-13 grade, covering compact flanges and fittings as well as larger joints.
- Joints under changing conditions: Anywhere vibration, thermal cycling, gasket relaxation or bolt creep can loosen a bolted connection.
Good to Know
- Choose by temperature: 17-7 covers colder service, while the Nickel Plated H-13 Disc Spring is the pick for higher temperatures and stronger bolting.
- Sized with software: AIGI's LLCS live-loading software helps calculate the required stress and select the right spring and torque.
- Certified curves: A load-deflection curve can be provided for each batch.
- Unplated option: Conventional 17-7 disc springs are available too.
