Kalrez 1050LF in Medical Device Breathing Circuit

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somashekar

Staff member
Super Moderator
#3
Looking for some help: Has anyone used Kalrez 1050LF in the breathing circuit of a medical device?
Compound 1050LF— is a perfluoroelastomer part of DuPont performance elastomers.
A carbon black-filled, general-purpose compound for o-rings, seals, and other parts used in chemical process industries. It has good hot water/steam, and excellent amine resistance. 1050LF is not recommended for use in organic or inorganic acids at high temperatures.
So use of it in a medical device breathing circuit (as seals I guess) must consider any cleaning requirements in the risk assessment and accordingly used based on its properties.
 
R

Rubber_Guy

#4
Kalrez® 1050LF is an excellent material for many applications but is likely not the best choice in this case. Kalrez® 6230 or Kalrez® 624 may be better choice IF a perfluroelastomer is required in this application. Suggest you send me an offline message and I would be happy to discuss the specific application in more detail.
 

howste

Thaumaturge
Super Moderator
#5
Kalrez® 1050LF is an excellent material for many applications but is likely not the best choice in this case. Kalrez® 6230 or Kalrez® 624 may be better choice IF a perfluroelastomer is required in this application. Suggest you send me an offline message and I would be happy to discuss the specific application in more detail.
Can you give us details of what makes the other materials more suitable? Taking the discussion offline won't help any others that may have a similar question... :cool:
 

Marc

Hunkered Down for the Duration with a Mask on...
Staff member
Admin
#6
Looking for some help: Has anyone used Kalrez 1050LF in the breathing circuit of a medical device?
We need to know what the application is. From the posts above, is this an o-ring seal at a breathing tube junction or something like that (a component of the system)?
 
R

Rubber_Guy

#7
Bulding on howste & Marc's replys...the only way to choose the proper material for a sealing application to know the specific sealing requirements...the sealing location & type of seal, tempratures (both high & low temp needs), pressures, any specific chemical resistance required, etc., etc. Kalrez® is an otstanding sealing material, but it is expensive. Has another material been tested? If yes, what was the failure mode. The only reason I suggested an off-line conversation is quite often, the specific of an application are confidential and someone may not wish to post them in an open forum.
 

Miner

Forum Moderator
Staff member
Admin
#8
We appreciate your assistance, and want to encourage your continued help.

As you can imagine, we field a lot of attempts to Spam the forum or advertise products/services with no attempt to actually help anyone. As a former rubber manufacturing person, I understand completely your anticipation that they would not want to air specifics about their process. We try to encourage as much open discussion as possible, so all may benefit, but it sometimes does require going offline as a final option.
 

Ronen E

Problem Solver
Staff member
Moderator
#9
We appreciate your assistance, and want to encourage your continued help.

As you can imagine, we field a lot of attempts to Spam the forum or advertise products/services with no attempt to actually help anyone. As a former rubber manufacturing person, I understand completely your anticipation that they would not want to air specifics about their process. We try to encourage as much open discussion as possible, so all may benefit, but it sometimes does require going offline as a final option.
Hello,

Not diminishing all the above -

I have no affiliation with DuPont (Kalrez proprietor), Kalrez commerce etc. (BTW, Kalrez O-rings can only be sourced through DuPont's certified distributors). I had a brief encounter with this material as I was looking for a solution in a very demanding pharma manufacturing application. Indeed Kalrez O-rings are extremely expensive compared with the alternatives, but it also seems to be a wonder sealing material with unbelievable performance. In our case I wasn't eventually given green light to use it, due to its cost.

I did not go into the catalogues and specifications (which are pretty much accessible to anyone on the web) in this instance (too lazy), but I can say that some Kalrez grades are specified for general industry while others are designated pharma / medical grade. My :2cents: at the moment are: verify that indeed there's no cheaper solution that would suffice, and make sure you pick a medical grade if you do decide to use Kalrez.

Cheers,
Ronen.
 

wooden nickle

Involved In Discussions
#10
Bulding on howste & Marc's replys...the only way to choose the proper material for a sealing application to know the specific sealing requirements...the sealing location & type of seal, tempratures (both high & low temp needs), pressures, any specific chemical resistance required, etc., etc. Kalrez® is an otstanding sealing material, but it is expensive. Has another material been tested? If yes, what was the failure mode. The only reason I suggested an off-line conversation is quite often, the specific of an application are confidential and someone may not wish to post them in an open forum.
Thank you all for your responses. We are operating near ambient temps at low pressure. However we are involved with a fairly aggressive gas.
 
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