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2-Pack Arm Index Replacement for Herman Miller Aeron Chair – 3D Printed
Restore proper armrest function to your Herman Miller Aeron chair with this premium pivoting arm index replacement set. Designed to repair loose, slipping, or broken armrest pivot mechanisms, these parts return smooth, firm adjustment and improve overall ergonomics.
Precision-engineered from industrial-grade Nylon PA12, these replacements are significantly stronger and more durable than standard plastic components, making them ideal for long-term use in both home and professional office environments.
FeaturesCompatible with Herman Miller Aeron Chairs
Designed to fit classic Aeron pivoting arm mechanisms.
Industrial-Grade Nylon PA12
Offers superior strength, wear resistance, and long-term durability.
Restores Proper Armrest Function
Fixes loose or sagging armrests and restores smooth, secure pivoting action.
Precision Fit
Engineered for accurate alignment and reliable performance.
Easy DIY Installation
Repair your high-end office chair without costly service calls.
Made in the USA
Designed and manufactured domestically to ensure quality and consistency.
2× Arm Index Replacement Parts
Over time, the original arm index components can wear or break, causing armrests to lose tension or fail to stay in position. Replacing them restores proper support, comfort, and adjustability—extending the life of your Aeron chair.

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