Not all vintage chairs marketed as Nychair X have the same specifications. There were multiple lookalike products that might have different width, length, placement of connection points, etc. It is important to compare your chair's shape and size to see if the replacement seat will fit.
The replacement parts available in our store are only compatible with the following Nychair X:
Nychair X made by Fujiei Corporation
Nychair F made by Fujiei Corporation (discontinued)
Nychair X made by Nyfurniture (discontinued)
The chairs can be distingushed by the seat fabric.
Both Fujiei Corporation and Nyfurniture use twill weave fabric with a diagonal pattern. If the seat is made with plain weave, it was made by another company and is not an original product.
The replacement parts available in our store are only compatible with the following Nychair X:
Nychair X made by Fujiei Corporation
Nychair F made by Fujiei Corporation (discontinued)
Nychair X made by Nyfurniture (discontinued)
The chairs can be distingushed by the seat fabric.
Both Fujiei Corporation and Nyfurniture use twill weave fabric with a diagonal pattern. If the seat is made with plain weave, it was made by another company and is not an original product.

The chairs can be distingushed by the seat fabric.
Both Fujiei Corporation and Nyfurniture use twill weave fabric with a diagonal pattern. If the seat is made with plain weave, it was made by another company and is not an original product.
How to recognize Fujiei Corporation's Nychair X?
There are tags with Nychair X and Fujiei Corporation logos on the back of the seat.
Hexagonal-head screws are used at the intersection of both legs. The screws are made of stainless steel.
Hexagonal-head screws are used in the front and back of the armrests. The screws are made of stainless steel.
Both sides of the upper part of the seat have reinforcement stitching, so the inner pipe does not move easily.

How to recognize Nyfurniture's Nychair X?
No tag is attached.
Phillips-head screws are used at the intersection of both legs.
Phillips-head screws are used in the front and back of the armrests.
There is no reinforcement stitching on any side of the upper part of the seat.

For seat replacement instructions see this page.