Scubapro O-ring Sizes

[Scubagaskets]

Those are the hard to find O-rings that i have so far

NBR 70 SOFT 2.20 X 1.00 -O-rings for Scuba Diving
NBR 70 SOFT 2.50 X 1.00 - Premium O-rings Provider for Scuba Diving
NBR 70 - R0- 2,40 X 1,90 mm - Premium O-rings Provider for Scuba Diving
NBR 70 O-Rings 1.70 x 1.00 APEKS - Premium O-rings Provider for Scuba Diving
NBR 70 SOFT 1.95 X 1.00 - Premium O-rings Provider for Scuba Diving

 

[Couv]

Those are the hard to find O-rings that i have so far

NBR 70 SOFT 2.20 X 1.00 -O-rings for Scuba Diving
NBR 70 SOFT 2.50 X 1.00 - Premium O-rings Provider for Scuba Diving
NBR 70 - R0- 2,40 X 1,90 mm - Premium O-rings Provider for Scuba Diving
NBR 70 O-Rings 1.70 x 1.00 APEKS - Premium O-rings Provider for Scuba Diving
NBR 70 SOFT 1.95 X 1.00 - Premium O-rings Provider for Scuba Diving

You are making us work too hard. Some of the o-rings you are hawking simply are not the OEM equivalent. I have no problem if a supplier upgrades a product e.g. from NBR to EPDM or Viton and claims "upgrade" as part of his advertisement, but not the other way around. In some cases, you actually state "ScubaPro part number xyz." That is fine for someone who is rebuilding his own regulator and wants to make that exchange, but is not a fair practice for a vendor.

Here are two cases just from your list above....I have not checked the rest.
NBR 70 SOFT 2.20 X 1.00 -O-rings for Scuba Diving
ScubaPro -363 EPDM Sh 70

This one is particularly disturbing as not only is the material wrong, but the hardness is going to be problematic: NBR 70 - R0- 2,40 X 1,90 mm - Premium O-rings Provider for Scuba Diving
ScubaPro -317 EPDM Sh 85

And for God's sake, why such high quantities? If you really want to put out a very useful product-do your research (we don't mind helping here) and put kits together for a single model rebuild. Bryan at Vintage Double Hose has done this with success as have others.

 

[rhwestfall]

NBR 70 SOFT 2.20 X 1.00 -O-rings for Scuba Diving
ScubaPro -363 EPDM Sh 70

What would one see in the material difference?

 

[Scubagaskets]

I will get back to you as soon as i make a total cross check for all codes and products.
Thanks for your feedback

 

[Couv]

In that application....probably none. But my point is the vendor is using a material different than the OEM but using the OEM's part number without stating the material is different. One minor difference is the shelf life. EPDM is indefinite where NBR is about 15 years. How old are these o-rings to begin with? If they are already 10 years old when you buy a set (he sells them in quantities of 100) the self life would expire before most of us in this DIY community would have a chance to use them.

 

[Scubagaskets]

You are making us work too hard. Some of the o-rings you are hawking simply are not the OEM equivalent. I have no problem if a supplier upgrades a product e.g. from NBR to EPDM or Viton and claims "upgrade" as part of his advertisement, but not the other way around. In some cases, you actually state "ScubaPro part number xyz." That is fine for someone who is rebuilding his own regulator and wants to make that exchange, but is not a fair practice for a vendor.

Here are two cases just from your list above....I have not checked the rest.
NBR 70 SOFT 2.50 X 1.00 -O-rings for Scuba Diving
ScubaPro -363 EPDM Sh 70

This one is particularly disturbing as not only is the material wrong, but the hardness is going to be problematic: NBR 70 - R0- 2,40 X 1,90 mm - Premium O-rings Provider for Scuba Diving
ScubaPro -317 EPDM Sh 85

And for God's sake, why such high quantities? If you really want to put out a very useful product-do your research (we don't mind helping here) and put kits together for a single model rebuild. Bryan at Vintage Double Hose has done this with success as have others.

Dear Couv,
In the charts that i have and are posted in a previous post by another member of the group here it mentions that the
01-050-363 scubapro part no is made of NI =Nitrile material .I am referring to the NBR 2.5 x 1.0
Can you please post me the catalogue you have that mention that the 317 is made from EPDM material? I might have a different catalogue.
thanks
nicolas

 

[Scubagaskets]

In that application....probably none. But my point is the vendor is using a material different than the OEM but using the OEM's part number without stating the material is different. One minor difference is the shelf life. EPDM is indefinite where NBR is about 15 years. How old are these o-rings to begin with? If they are already 10 years old when you buy a set (he sells them in quantities of 100) the self life would expire before most of us in this DIY community would have a chance to use them.

Regarding the age of the o-ring stock that i have, i assure you that EPDM and some new NBR , polyurethane and Viton Green are under 6 months old and regarding the other stock not more than 3 years. Our o-rings are prepacked in a sealed containers for extra protection from the elements of nature. I can give you my supplier name in order to assure you about that .

 

[Wayward Son]

FWIW, I ordered some o rings last week. They shipped in less than a day & arrived 2 days ago. They ship from Cyprus.

 

[Couv]

Dear Couv,
In the charts that i have and are posted in a previous post by another member of the group here it mentions that the
01-050-363 scubapro part no is made of NI =Nitrile material .I am referring to the NBR 2.2 x 1.0
Can you please post me the catalogue you have that mention that the 317 is made from EPDM material? I migth have a different catalogue.
thanks
nicolas

Hi Nicolas,

The only charts I have are unauthorized and posted in a previous thread. I'll attach a copy shortly...but again, please heed this disclaimer: It is for reference only. Could I suggest you purchase the SP kits you intend to make aftermarket copies of, and measure the o-ring sizes? The material can be identified with a tool such as this: O-Ring Material Identifier Device

 

[Scubagaskets]

Dear Couv,

The identification process took place in Europeseals facilitys with the use of very specialised equipment based on the orings used by a authorized service shop. I will definitely clear out this issue. Regarding the EPDM and NBR material there is no significant difference in scuba applications since EPDM is used for the higher temperature resistant by the drinking water industry. In respect of scuba diving industry there is no issue when the material used is EPDM or NBR since temperature is not an issue . Yes you are correct the part number should correspond to the all 3 characteristics of the oring Sh material Size. Thanks for the file i will cross check with the other files that i have.
Never the less in the file you send me again and in the other files as well as the results of my identification process based on the original o-ring samples indicate that the 2.5m x 1mm part no 01-050-363 is made of NBR and is a soft oring .How did you find out that the 2.5mm x 1mm oring is made of EPDM Sh 70? On what ground did you reached to that conclusion?