Included in the kit are replacements for the following -
1 x EC2818 "L" Crystal Seal
1 x FH2980 Flat Caseback Seal
The crystal seal is the correct style "upside down L" shape seal and is sandwiched between the bonded ring of the V style crystal and the case.
The seals are made from high quality EPDM synthetic elastomer. EPDM will vastly outlast the original black nitrile seals for this model and should last the life of the watch assuming they aren't damaged or worn by dirt or contamination. In addition to this, it performs better in sub zero and tropical conditions.
The seals will pass a pressure test to the indicated water resistance for this model, assuming the seals are fitted correctly, the correct crown and pushers are fitted, the correct crystal is fitted and there is no corrosion in the case. I test on a Witschi ALC-2000 dry pressure tester.
The crown seals may not fit aftermarket pushers and crowns. They are often not made to the original spec and use a smaller seal. They can be modified in a lathe to work, but I'll assume you know what you are looking for.
Please also double check your watch has the correct caseback, as many have been swapped over the years and if it is wrong, I may send you the wrong seal kit.
I now have two postage options. The free post is tracked DHL eCommerce worldwide. The optional post is tracked DHL Express worldwide (approx 3-7 days). I do not offer local pickup.
Combining shipments is no problem. You can put the items you need in the cart, purchase them and request a total.
For more SEIKO tech information and chat, try WristSushi -
http://www.wristsushi.com
My website is here -
http://www.vintagetimeaustralia.com
Youtube channel here -
https://www.youtube.com/user/hal0eight