|
|
Post by leffemonster on Aug 2, 2019 10:40:29 GMT -8
No excuses really but one thing I generally don’t do is replace gaskets, unless they’re obviously beyond viable use (I don’t think I’ve ever replaced a crown gasket for example). Don’t ask me why, but I remembered today that I wore a 6309-8080 on a very hot day last year and noticed the crystal misting on the inside.
Checking on Cousins, many of the OEM gaskets I’ll need for my watches are either discontinued, or pretty pricey. As an example, the FH2980B01 for the 6309-8080 (and many others I have) come in at £8.15 each - for a tiny bit of rubber!!
So, fellow tinkerers, has anyone found generic replacements that actually ‘work’? As an example, Cousins do a pack of 10 of the DJ0060B01 crown/pusher gasket replacements for £0.90 - anyone tried them?
Or am I best just breaking my habit of being a tight arse, biting the bullet and wedging out for VTA replacements?
|
|
pip
WS Benefactor
Berkshire, UK
Posts: 6,174 
|
Post by pip on Aug 2, 2019 10:54:10 GMT -8
I’ve bought the pack of mixed from Cousins and manage somehow to find what one is equivalent to some of the Seiko ones each time. Buggers to install though! There are also some spare containers so you can add when you buy something specific.   |
|
|
|
Post by leffemonster on Aug 2, 2019 11:22:29 GMT -8
I’ve bought the pack of mixed from Cousins and manage somehow to find what one is equivalent to some of the Seiko ones each time. Buggers to install though! There are also some spare containers so you can add when you buy something specific. How were they for fit Phil? |
|
pip
WS Benefactor
Berkshire, UK
Posts: 6,174
|
Post by pip on Aug 2, 2019 11:46:43 GMT -8
I would say I’m the wrong person to ask. I thought they were ok but I’ve not done any OEM ones to compare it to. Maybe a bit tight in the tube sometimes but that’s a good thing isn’t it?!!
|
|
kue
Timekeeper
Posts: 598
|
Post by kue on Aug 2, 2019 13:37:06 GMT -8
I'm not gasket obsessed either but moving towards doing them when I can.
The ones on cousins work just fine. A bit of silicone grease on the seals and threads and you're good, it makes all the difference. You can be a real tight arse and use £1 grease for plumbing.
They are a bit tight, which as mentioned is good. Just make sure it's all clean inside and out.
|
|
GuyJ
Needs a Life!
Whitley Bay, UK
Posts: 2,860
|
Post by GuyJ on Aug 2, 2019 16:21:38 GMT -8
Pusher gaskets- DJ0060BO1 (G39086), EG006BAA1 (G39081), EC0060BO1 (G39083).
I think DJ0160BO1 works for the crown as (G36762)
7A28-7030 bezel gasket 86567680 works well as (34503334R)
6309-7040 rotating ring gasket 0Z3660B01 works as (903650C)
7546 sports 100 bezel gasket 86179660 (IG328320C2)
I'd love to know many more alternatives, for instance 0K0180B0A,DJ2990B04, FH2980B01 and FH3181B01. Probably more I cant think of but if anyone has alternatives for these...
|
|
|
|
Post by leffemonster on Aug 2, 2019 23:50:39 GMT -8
Pusher gaskets- DJ0060BO1 (G39086), EG006BAA1 (G39081), EC0060BO1 (G39083). I think DJ0160BO1 works for the crown as (G36762) 7A28-7030 bezel gasket 86567680 works well as (34503334R) 6309-7040 rotating ring gasket 0Z3660B01 works as (903650C) 7546 sports 100 bezel gasket 86179660 (IG328320C2) I'd love to know many more alternatives, for instance 0K0180B0A,DJ2990B04, FH2980B01 and FH3181B01. Probably more I cant think of but if anyone has alternatives for these... Thanks for the confirmation Guy - some added to my basket  |
|
cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
|
Post by cobrajet25 on Aug 3, 2019 3:21:45 GMT -8
OEM gaskets for 6139s used to be pretty cheap here in the US from Borel. Then, seemingly overnight, they jacked the price up AND got rid of the discount they used to offer on bulk purchases.
So I found other ones that work, and only buy OEM when I have to. Borel's D75-0060.080 is great for 6139 pushers, and their D41-0060.050 is an excellent replacement for the OEM gaskets on 7A chronos...just to name two.
You probably won't use Borel, but it really is just a matter of trial-and-error.
|
|
|
|
Post by leffemonster on Aug 3, 2019 3:41:54 GMT -8
The FH2980B01 is the main one I’m looking out for. I just don’t understand why they’re so expensive, other than profiteering. The FH2920B03 is a mere £1.50 for a pack of 2, so why the hell is a gasket that’s only 0.6mm more rubber over £8 each??  |
|
cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
|
Post by cobrajet25 on Aug 3, 2019 4:00:30 GMT -8
I suspect it is because they have discovered people will pay it.
If you only have one 6139 and want to get it wrist-ready, the cost of that caseback gasket probably seems reasonable. It's people who have TEN or TWENTY 6139s they want to reseal who recoil in horror at the cost of a simple rubber gasket.
Last time I bought OEM FH2980s from Borel I think they were around $3.00 each. They are about $7.00 now, but I discovered that Borel's $2.25 F100-3000 works just fine.
|
|
GuyJ
Needs a Life!
Whitley Bay, UK
Posts: 2,860
|
Post by GuyJ on Aug 3, 2019 8:08:52 GMT -8
Could someone explain how to make sense of the Borel gasket numbers? Zero info about dimensions unless I'm not looking where I should be. Did a search for F100, many came up, searched F100-3000 and, nothing.
|
|
cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
|
Post by cobrajet25 on Aug 3, 2019 8:15:03 GMT -8
Could someone explain how to make sense of the Borel gasket numbers? Zero info about dimensions unless I'm not looking where I should be. Did a search for F100, many came up, searched F100-3000 and, nothing.
I don't think they have them anymore, at least not in stock. Try searching 'F100-2950'. That one should be close enough as well.
As I am sure you know, compared to the OEM FH2980B the -3000 would be a hair bigger in terms of inside diameter, the -2950 a hair smaller.
As near as I can tell, 'F' means flat, '100' is a gasket that is 1.00mm thick, and '2950' is a gasket that has an inside diameter of 29.50mm. Some gasket numbers have dimensions listed, others do not.
|
|
GuyJ
Needs a Life!
Whitley Bay, UK
Posts: 2,860
|
Post by GuyJ on Aug 3, 2019 8:24:45 GMT -8
Ahh...ok that is great thank you!
|
|
|
|
Post by leffemonster on Aug 6, 2019 13:19:43 GMT -8
Bought a few FH2920B03 gaskets which arrived today and have just fitted one to a 6139 caseback. Seems to fit perfectly, didn’t need to stretch it and the caseback screws back on perfectly. Obviously, I’ve no idea how it would fair in a pressure test for water resistance but given I submerses any of my watches (not even divers) I reckon I’ll live with it - especially at the price compared to the FH2980.
|
|
cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
|
Post by cobrajet25 on Aug 6, 2019 16:58:50 GMT -8
Bought a few FH2920B03 gaskets which arrived today and have just fitted one to a 6139 caseback. Seems to fit perfectly, didn’t need to stretch it and the caseback screws back on perfectly. Obviously, I’ve no idea how it would fair in a pressure test for water resistance but given I submerses any of my watches (not even divers) I reckon I’ll live with it - especially at the price compared to the FH2980.
Yes, it will fit reasonably well. It is only 0.6mm smaller in terms of inside diameter. It is the thickness that I might be concerned about. Since the caseback gasket fits down in a recess on the 6139, a gasket that is too thin might be virtually useless. Worse than the original gasket, even.
|
|
|
|
Post by leffemonster on Aug 6, 2019 22:15:50 GMT -8
Bought a few FH2920B03 gaskets which arrived today and have just fitted one to a 6139 caseback. Seems to fit perfectly, didn’t need to stretch it and the caseback screws back on perfectly. Obviously, I’ve no idea how it would fair in a pressure test for water resistance but given I submerses any of my watches (not even divers) I reckon I’ll live with it - especially at the price compared to the FH2980.
Yes, it will fit reasonably well. It is only 0.6mm smaller in terms of inside diameter. It is the thickness that I might be concerned about. Since the caseback gasket fits down in a recess on the 6139, a gasket that is too thin might be virtually useless. Worse than the original gasket, even.
So if I’ve understood the coding system correctly it should be ok then, as they are the same thickness - 0.5mm - as denoted by the ‘H’ in the part number. |
|
kue
Timekeeper
Posts: 598
|
Post by kue on Oct 22, 2019 13:10:00 GMT -8
Just an update - I have found a replacement for DJ0160B1. G36324 at 1.60mm ID and G30838 at 1.55mm ID both worked great with a reassuring tightness but still easy enough to rotate. Had to use 2 gaskets on each crown but I'm happy with that.   |
|
|
|
Post by gm201263 on Oct 27, 2021 16:17:17 GMT -8
Decoding of Seiko gaskets should not be difficult using Seiko coding chart but... Confusing part is the last two letters/digits. For example: FH2980B0A vs FH2980B01 vs FH2980B02 vs FH2980B03 What is a difference? Last two letters/digits. F=Flat square H=0.50 (radial thickness) 2980 = 29.80mm ID B=black OD is easily calculated; 2x0.50+29.80=30.80 So far so good but the last two letters/digits are enigma to myself. O=listed in Seiko chart is shape; round? or else?. This is also OK as it is the same in all these gaskets. A=listed in Seiko chart is serial number?  So the only real difference is very the last letter/digit. What does it represent: Height? Type of movement? Case number? Height would make sense to me but I couldn't find the confirmation. If we find out what it represent we can look for gasket alternatives which could be significantly cheaper. |
|
cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
|
Post by cobrajet25 on Oct 29, 2021 3:41:49 GMT -8
A=listed in Seiko chart is serial number? So the only real difference is very the last letter/digit. What does it represent: Height? Type of movement? Case number?
Perhaps it refers not to the dimensions of the gasket or the particular application, but rather to the specific type of gasket material used? Like natural rubber versus synthetic rubber versus silicone? Butyl rubber versus nitrile rubber versus viton?
|
|
pip
WS Benefactor
Berkshire, UK
Posts: 6,174
|
Post by pip on Oct 29, 2021 4:18:30 GMT -8
A=listed in Seiko chart is serial number? So the only real difference is very the last letter/digit. What does it represent: Height? Type of movement? Case number?
Perhaps it refers not to the dimensions of the gasket or the particular application, but rather to the specific type of gasket material used? Like natural rubber versus synthetic rubber versus silicone? Butyl rubber versus nitrile rubber versus viton?
I think they put the last digit in just to phuk with our heads. |
|
