Bezel Insert Dimensions for commonly modded Seiko Watches

Looking for the dimensions of a bezel insert? You've come to the right place.

We've compiled the bezel insert sizes of some of the most commonly modded Seiko dive watches. In this list, you'll find the bezel insert dimensions for the following watch models:

• Seiko SKX007/SKX009/SKX173/SKX175/SRPD Seiko 5 Dive Watches
• Seiko SKX013
• Seiko SRP Turtle
• Seiko SNZH
• Seiko Sumo

For each bezel insert, we'll be sharing the Outer Diameter and Inner Diameter in millimetres (mm). Refer to the below images for an illustration of what the Outer Diameter and Inner Diameter are:

Outer Diameter

Inner Diameter

 

 

SKX007/SKX009/SRPD

Flat Insert - Outer Diameter: 38.0 mm

Flat Insert - Inner Diameter: 31.5 mm

Sloped Insert - Outer Diameter: 38.0mm

Sloped Insert - Inner Diameter: 30.6mm

Other case numbers that share the same bezel insert measurement: SKX173, SKX175, 6105-8110, 6306-7000, 6309-7040, 6309-7290, 7002, 7549.

Not sure how to check your case number? Check out this handy resource from Plus9Time for more information.

 

SKX013

Outer Diameter: 33.7 mm

Inner Diameter: 27.5 mm

 

Seiko SRP Turtle

Outer Diameter: 39.1 mm

Inner Diameter: 32.5 mm

 

Seiko SNZH series

Outer Diameter: 39.5 mm

Inner Diameter: 32.5 mm

 

Seiko Sumo

Outer Diameter: 39.75 mm

Inner Diameter: 31.55 mm

 

We hope this list will be useful. Some of you message us asking if your Orient, Invicta or Glycine watches will be compatible with our aftermarket bezel inserts. By measuring the bezel insert of your watch and referring to this list, you'll be able to find your answer!

If you'd like to add to this list of bezel insert dimensions, do drop us a message at support@namokimods.com and we'll be happy to add it to this page.