I have collected Seiko watches for 50 years

If you need advice on which gasket, tell me the 8 digit case back number

I can check you have the correct part, or give you the correct part number 

Generic Seiko Crown Stem Seal (qty 1)

 Part Number 0D016BAA1

They fit the Seiko below.

                                                        I can pre-grease you gasket/seal, silicon grease, just ask  

Price is 1 Ring Seal "D" type