- Email: [email protected]
Simrit offers small-diameter PTFE U-rings
NEWS means that equipment manufacturers and processors can select it for all of their demanding sealing needs.’ Isolast J9876 has a continuous operating temperature range of -7°C to 275°C, with occasional peaks up to 315°C. Specifically developed to cover applications in mixed chemical streams, including acids, bases, amines, steam, ethylene and propylene oxides, the material’s media resistance at high temperatures means it has excellent long-term physical property retention. It is available in all O-ring sizes, as gaskets, moulded parts or rubber-to-metal bonded components, including door and gate seals. Contact: Trelleborg Sealing Solutions, Global Marketing & Communications, Handwerkstrasse 5–7, D-70565 Stuttgart, Germany. Tel: +49 711 78640, Fax: +49 711 7864 344, Email: [email protected], Web: www.tss.trelleborg.com.
Novus Sealing launches thread sealant paste
N
ovus Sealing Ltd has introduced Grafoil GTS thread sealant. It consists of a high-purity paste made from a combination of nuclear-grade graphite and a nuclear quality petroleum-based carrier. It is made to seal small diameter, close tolerance threaded pipe joints in critical applica-
tions and, according to the firm, is capable of outperforming conventional thread sealants in applications involving temperatures up to 635°C. It is also effective as a bolt lubricant or anti-seize compound. Contact: Novus Sealing Ltd, Hunsworth Lane, Cleckheaton, West Yorkshire BD19 4EJ, UK. Tel: +44 1274 878787, Fax: +44 1274 862588, Web: www.novussealing.com.
Simrit offers small-diameter PTFE U-rings
S
imrit’s Forseal PTFE U-rings are now available with a diameter as small as 2 mm. This range of seals can be used in a wide range of liquid and gaseous media at pressures up to 30 MPa dynamic and 120 MPa static, with temperatures ranging from cryogenic to 260°C. The extended range is now available in increments of 1 mm with diameters of 2–8 mm.
Contact: Freudenberg Simrit GmbH & Co KG, Simrit Marketing Europe, D-69465 Weinheim, Germany. Tel: +49 1805 746748, Fax: +49 1803 746748, Email: [email protected], Web: www.simrit.de.
BOB’S BIT
T
here are two complementary old sayings to which I quite firmly subscribe – the first, ‘A little knowledge is dangerous’ and its companion ‘The more you know, the more you realise what you do not know’. I am often rather surprised when asked to give a talk, or provide a course. I have been involved with sealing for long enough to realise just how little I know and what huge gaps there are in my knowledge, compared with others. And one of the by-products of research often can be that a programme of work may answer one question, but will usually produce several more. My contributions in helping to generate this fund of ignorance have helped keep me employed for 35 year! However, I have been reminded of the saying ‘A little knowledge is dangerous’ by an item I found while searching for news for this issue. There was apparently a fire at the Tema Oil Refinery in Ghana on 19 January in which two people died. I do not know if the fire could be attributed to a seal failure but the news item in question was an interview with a member of the Ghana Energy Commission, Charles Kofi Wayo. It sounds as if Wayo has been conducting a campaign to highlight poor operating standards at the refinery, which may be quite justified. The interviewer asked: ‘But we have qualified engineers who are working on it and for some time we haven’t had the fire outbreak there and the understanding I have is that they are maintaining a high standard of safety, so why do you conclude that way?’ The reply included: ‘If you have engineers there why is it that one small bolt you have to wait for a white man two, three months. You can’t even make your own bolts. You can’t even tool anything down there, even gasket, common gasket when it blows, you shut down the RFCC and stuff like that so where are the engineers?’ As far as I am aware, RFCC refers to a type of catalytic cracker, which generally works at rather high temperatures. The thought of someone in the refinery workshop turning up a few bolts and knocking out a gasket for the cat cracker sounds like a recipe for a rather bigger fire than the one they have just experienced. Bob Flitney
Simrit’s Forseal PTFE U-rings are now available with a diameter as small as 2 mm.
March 2010
Sealing Technology
3
Novus Sealing launches thread sealant paste
N
ovus Sealing Ltd has introduced Grafoil GTS thread sealant. It consists of a high-purity paste made from a combination of nuclear-grade graphite and a nuclear quality petroleum-based carrier. It is made to seal small diameter, close tolerance threaded pipe joints in critical applica-
tions and, according to the firm, is capable of outperforming conventional thread sealants in applications involving temperatures up to 635°C. It is also effective as a bolt lubricant or anti-seize compound. Contact: Novus Sealing Ltd, Hunsworth Lane, Cleckheaton, West Yorkshire BD19 4EJ, UK. Tel: +44 1274 878787, Fax: +44 1274 862588, Web: www.novussealing.com.
Simrit offers small-diameter PTFE U-rings
S
imrit’s Forseal PTFE U-rings are now available with a diameter as small as 2 mm. This range of seals can be used in a wide range of liquid and gaseous media at pressures up to 30 MPa dynamic and 120 MPa static, with temperatures ranging from cryogenic to 260°C. The extended range is now available in increments of 1 mm with diameters of 2–8 mm.
Contact: Freudenberg Simrit GmbH & Co KG, Simrit Marketing Europe, D-69465 Weinheim, Germany. Tel: +49 1805 746748, Fax: +49 1803 746748, Email: [email protected], Web: www.simrit.de.
BOB’S BIT
T
here are two complementary old sayings to which I quite firmly subscribe – the first, ‘A little knowledge is dangerous’ and its companion ‘The more you know, the more you realise what you do not know’. I am often rather surprised when asked to give a talk, or provide a course. I have been involved with sealing for long enough to realise just how little I know and what huge gaps there are in my knowledge, compared with others. And one of the by-products of research often can be that a programme of work may answer one question, but will usually produce several more. My contributions in helping to generate this fund of ignorance have helped keep me employed for 35 year! However, I have been reminded of the saying ‘A little knowledge is dangerous’ by an item I found while searching for news for this issue. There was apparently a fire at the Tema Oil Refinery in Ghana on 19 January in which two people died. I do not know if the fire could be attributed to a seal failure but the news item in question was an interview with a member of the Ghana Energy Commission, Charles Kofi Wayo. It sounds as if Wayo has been conducting a campaign to highlight poor operating standards at the refinery, which may be quite justified. The interviewer asked: ‘But we have qualified engineers who are working on it and for some time we haven’t had the fire outbreak there and the understanding I have is that they are maintaining a high standard of safety, so why do you conclude that way?’ The reply included: ‘If you have engineers there why is it that one small bolt you have to wait for a white man two, three months. You can’t even make your own bolts. You can’t even tool anything down there, even gasket, common gasket when it blows, you shut down the RFCC and stuff like that so where are the engineers?’ As far as I am aware, RFCC refers to a type of catalytic cracker, which generally works at rather high temperatures. The thought of someone in the refinery workshop turning up a few bolts and knocking out a gasket for the cat cracker sounds like a recipe for a rather bigger fire than the one they have just experienced. Bob Flitney
Simrit’s Forseal PTFE U-rings are now available with a diameter as small as 2 mm.
March 2010
Sealing Technology
3