Sealing Fisher Connectors

**Monkey** · 15th January 2008, 14:07

is there a way to Seal the fisher connector so it stops being the weak link on my VR3?

I have a URM.... and water egres into the connector made me call a dive.

Grease ? silicon?

hack it off and change it to some other fitting??

Monkey

jo_c · 15th January 2008, 14:50

Fill the connection with mineral oil?
Or if it's a more permanent connection, wrap it up in some of this?
Rescue Tape Self-Fusing Silicone Tape ~ The Ultimate Multi-Purpose Repair Tape!

Stephane · 15th January 2008, 15:03

Here is how the Fischer connector from Hydro Space Engineering is sealed:

The glue covering the contacts is soft, probably silicone sealant.

**Monkey** · 15th January 2008, 17:28

Quote: (Originally Posted by Stephane)

Here is how the Fischer connector from Hydro Space Engineering is sealed:

The glue covering the contacts is soft, probably silicone sealant.

thanks for the photo, however I was not clear in my post... the body of the connector is fine... mine is sealed the same way..

but I am getting water in the face, the contacts are getting wet.

Stephane · 15th January 2008, 17:44

So maybe the o-ring inside the female connector (on the VR3) is defective.

Have a look at this:

hrdubwd · 16th January 2008, 00:38

Quote: (Originally Posted by Stephane)

So maybe the o-ring inside the female connector (on the VR3) is defective.

Most likely explanation. It does need to be kept clean and slightly greased. If the O-ring is damaged, it must be changed.

The Fischer part number is 203562 (Internal Joint O-ring), which is 10.0 mm id x 1.5 mm thick. I do not know the compound, but it is a fairly soft (green) rubber - but not, I think, an "O2" type.

To remove the existing O-ring requires a small hook similar to a large sewing needle with the tip bent (although I suspect an actual needle may be too brittle to take such a bend). Be careful not to scratch the inside of the socket or the seat. This destroys the O-ring, of course, but it should then be fairly easy to pop the new one in using the plug as a driver. Use a thin soft plastic stick to guide the O-ring nearly into place first, even if it does not go all the way.

I suggest making sure that there is a little grease on the inside of the seat before putting the new O-ring in, and of course making sure that the plug tip is always undamaged and very slightly greased to ensure a seal. O-ring wear should then be minimal.

BWD

**Monkey** · 16th January 2008, 01:13

Quote: (Originally Posted by hrdubwd)

Most likely explanation. It does need to be kept clean and slightly greased. If the O-ring is damaged, it must be changed.

The Fischer part number is 203562 (Internal Joint O-ring), which is 10.0 mm id x 1.5 mm thick. I do not know the compound, but it is a fairly soft (green) rubber - but not, I think, an "O2" type.

To remove the existing O-ring requires a small hook similar to a large sewing needle with the tip bent (although I suspect an actual needle may be too brittle to take such a bend). Be careful not to scratch the inside of the socket or the seat. This destroys the O-ring, of course, but it should then be fairly easy to pop the new one in using the plug as a driver. Use a thin soft plastic stick to guide the O-ring nearly into place first, even if it does not go all the way.

I suggest making sure that there is a little grease on the inside of the seat before putting the new O-ring in, and of course making sure that the plug tip is always undamaged and very slightly greased to ensure a seal. O-ring wear should then be minimal.

BWD

I SEE NO O-RING ON THE INSIDE OF THE CONNECTOR.... and I have looked at all 5 VR3's I have in inventory.. and see NO Green o-ring...

Please advise.

Monkey

hrdubwd · 16th January 2008, 01:20

Quote: (Originally Posted by Monkey)

I SEE NO O-RING ON THE INSIDE OF THE CONNECTOR.... and I have looked at all 5 VR3's I have in inventory.. and see NO Green o-ring... Please advise. Monkey

Strange how this is the first response, every time ...
It is there all the same. You need a strong light and a lens? Logically, there must be an O-ring, and the Fischer drawings show it. The fact that it is hard to see does not change that.

BWD

**Monkey** · 16th January 2008, 03:11

Quote: (Originally Posted by hrdubwd)

Strange how this is the first response, every time ...
It is there all the same. You need a strong light and a lens? Logically, there must be an O-ring, and the Fischer drawings show it. The fact that it is hard to see does not change that.

BWD

Since the drawings show it, it must be there...flawed logic

And logically since mine is leaking..one could arrive at the logical conclution that the o-ring might NOT be there.

edit edit edit edit...

hrdubwd · 16th January 2008, 03:17

Quote: (Originally Posted by Monkey)

the o-ring might NOT be there.

That would be bizarre, but the probability is not zero. Much more likely is that it is damaged. Not knowing that an O-ring is there might mean that it has not been looked after.

I have had a very senior instructor swear blind that there is no O-ring in a direct feed hose connector ... and wonder why it leaked. You are not alone.

BWD

15th January 2008, 14:07	#1 (permalink)
Monkey Supporting Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2006 Location: Lauderdale By The Sea Florida Posts: 324	Sealing Fisher Connectors is there a way to Seal the fisher connector so it stops being the weak link on my VR3? I have a URM.... and water egres into the connector made me call a dive. Grease ? silicon? hack it off and change it to some other fitting?? Monkey
(Offline)

15th January 2008, 14:50	#2 (permalink)
jo_c Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Join Date: Jun 2006 Location: Hants, UK Posts: 128	Re: Sealing Fisher Connectors Fill the connection with mineral oil? Or if it's a more permanent connection, wrap it up in some of this? Rescue Tape Self-Fusing Silicone Tape ~ The Ultimate Multi-Purpose Repair Tape!
(Offline)

15th January 2008, 15:03	#3 (permalink)
Stephane Hey! Ho! Let's go! Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: Nantes - France Posts: 708	Re: Sealing Fisher Connectors Here is how the Fischer connector from Hydro Space Engineering is sealed: The glue covering the contacts is soft, probably silicone sealant. __________________ Stéphane Hammer-rEvo powered!
(Online)

15th January 2008, 17:28	#4 (permalink)
Monkey Supporting Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2006 Location: Lauderdale By The Sea Florida Posts: 324	Re: Sealing Fisher Connectors Quote: (Originally Posted by Stephane) Here is how the Fischer connector from Hydro Space Engineering is sealed: The glue covering the contacts is soft, probably silicone sealant. thanks for the photo, however I was not clear in my post... the body of the connector is fine... mine is sealed the same way.. but I am getting water in the face, the contacts are getting wet.
(Offline)

15th January 2008, 17:44	#5 (permalink)
Stephane Hey! Ho! Let's go! Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: Nantes - France Posts: 708	Re: Sealing Fisher Connectors So maybe the o-ring inside the female connector (on the VR3) is defective. Have a look at this: __________________ Stéphane Hammer-rEvo powered!
(Online)

16th January 2008, 00:38	#6 (permalink)
hrdubwd New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Nov 2005 Posts: 86	Re: Sealing Fisher Connectors Quote: (Originally Posted by Stephane) So maybe the o-ring inside the female connector (on the VR3) is defective. Most likely explanation. It does need to be kept clean and slightly greased. If the O-ring is damaged, it must be changed. The Fischer part number is 203562 (Internal Joint O-ring), which is 10.0 mm id x 1.5 mm thick. I do not know the compound, but it is a fairly soft (green) rubber - but not, I think, an "O2" type. To remove the existing O-ring requires a small hook similar to a large sewing needle with the tip bent (although I suspect an actual needle may be too brittle to take such a bend). Be careful not to scratch the inside of the socket or the seat. This destroys the O-ring, of course, but it should then be fairly easy to pop the new one in using the plug as a driver. Use a thin soft plastic stick to guide the O-ring nearly into place first, even if it does not go all the way. I suggest making sure that there is a little grease on the inside of the seat before putting the new O-ring in, and of course making sure that the plug tip is always undamaged and very slightly greased to ensure a seal. O-ring wear should then be minimal. BWD
(Offline)

16th January 2008, 01:13	#7 (permalink)
Monkey Supporting Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2006 Location: Lauderdale By The Sea Florida Posts: 324	Re: Sealing Fisher Connectors Quote: (Originally Posted by hrdubwd) Most likely explanation. It does need to be kept clean and slightly greased. If the O-ring is damaged, it must be changed. The Fischer part number is 203562 (Internal Joint O-ring), which is 10.0 mm id x 1.5 mm thick. I do not know the compound, but it is a fairly soft (green) rubber - but not, I think, an "O2" type. To remove the existing O-ring requires a small hook similar to a large sewing needle with the tip bent (although I suspect an actual needle may be too brittle to take such a bend). Be careful not to scratch the inside of the socket or the seat. This destroys the O-ring, of course, but it should then be fairly easy to pop the new one in using the plug as a driver. Use a thin soft plastic stick to guide the O-ring nearly into place first, even if it does not go all the way. I suggest making sure that there is a little grease on the inside of the seat before putting the new O-ring in, and of course making sure that the plug tip is always undamaged and very slightly greased to ensure a seal. O-ring wear should then be minimal. BWD I SEE NO O-RING ON THE INSIDE OF THE CONNECTOR.... and I have looked at all 5 VR3's I have in inventory.. and see NO Green o-ring... Please advise. Monkey
(Offline)

16th January 2008, 01:20	#8 (permalink)
hrdubwd New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Nov 2005 Posts: 86	Re: Sealing Fisher Connectors Quote: (Originally Posted by Monkey) I SEE NO O-RING ON THE INSIDE OF THE CONNECTOR.... and I have looked at all 5 VR3's I have in inventory.. and see NO Green o-ring... Please advise. Monkey Strange how this is the first response, every time ... It is there all the same. You need a strong light and a lens? Logically, there must be an O-ring, and the Fischer drawings show it. The fact that it is hard to see does not change that. BWD
(Offline)

16th January 2008, 03:11	#9 (permalink)
Monkey Supporting Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2006 Location: Lauderdale By The Sea Florida Posts: 324	Re: Sealing Fisher Connectors Quote: (Originally Posted by hrdubwd) Strange how this is the first response, every time ... It is there all the same. You need a strong light and a lens? Logically, there must be an O-ring, and the Fischer drawings show it. The fact that it is hard to see does not change that. BWD Since the drawings show it, it must be there...flawed logic And logically since mine is leaking..one could arrive at the logical conclution that the o-ring might NOT be there. edit edit edit edit... Last edited by Monkey : 16th January 2008 at 03:31.
(Offline)

16th January 2008, 03:17	#10 (permalink)
hrdubwd New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Nov 2005 Posts: 86	Re: Sealing Fisher Connectors Quote: (Originally Posted by Monkey) the o-ring might NOT be there. That would be bizarre, but the probability is not zero. Much more likely is that it is damaged. Not knowing that an O-ring is there might mean that it has not been looked after. I have had a very senior instructor swear blind that there is no O-ring in a direct feed hose connector ... and wonder why it leaked. You are not alone. BWD
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode