Del seal cf flanges

Metal Industries is one of the oldest manufacturers, dealer, distributor, stockist & suppliers of Blind Flanges, Reducing Threaded Flanges, Lap Joint Flanges, Flange Gaskets, Threaded Flanges, Socketweld Flanges, Flanges Bolts, Ring Flange, Spectacle Blind Flanges, Weld Neck Flanges, Orifice Flange, Slip-On-Flanges, High Hub Blinds Flanges, which are manufactured using superior grade of steel like SS Flanges / Stainless Steel Flange, 310 Flanges, 321 Flanges, 202 Flanges, 347 Flanges, 304 Flange, 316 Flanges, 316L Flanges., These Flanges are most durable and manufactures to fit in different size of Pipes. Engineers & World's Best Project Consultants use these Flanges in Machined Components, Metal Industries manufacturing Flanges & supplying to Government sector companies since 2 decades, we are approved vendor of Flanges in top notch government sector companies like ONGC, Indian Oil, NTPC, BHEL, ONGC, HPCL BPCL etc.we are also Saudi Aramco approved supplier of Flanges, we have supplied Flanges to companies involved in Equipment Manufacturing, Mining, Oil Refineries, Chemical manufacturing, Steel and Aluminum Manufacturing, Utilities and Transportation, and Industrial Construction We Also Supply & Maintain huge stock of Other Grades of Flanges like Alloy Steel Flange, A182 F1 / F5 / F9 / F11 / F22 / F91 FLANGES, Nickel Alloy 200 Flanges, Nickel Alloy 201 Flanges, S32750 Duplex Steel UNS S31803 Flanges, Flanges, Duplex Steel UNS S32205 Flanges, Carbon Steel Flanges, Copper Nickel Flange, Inconel 600, Incolloy 800 Flanges, Hastelloy, Monel 400 Flanges.

Del-Seal™  CF Flanges

Introduction

The reliable sealing performance of Metal Industries’s Del-Seal™ CF flanges is a result of a unique seal design and geometry which “captures” a metal gasket material. When a flat OFE copper gasket is pressed between the conical sealing edges of two Del-Seal™ CF flanges, a lateral cold flow of the gasket material occurs. This cold flow is limited by a vertical flange wall or capture groove that is concentric to the sealing knife edge. Further material flow away from the seal area is severely limited and high interface pressures are developed. These pressures cause gasket material to fill minor surface imperfections and produce a highly reliable seal. At high temperatures, the “capturing” geometry maintains high pressures despite softening of the gaskets. Del-Seal™ CF flanges can be baked to 450°C and cooled to -200°C and are suitable for vacuum service levels of 1x10-13 Torr. They are ideally suited for the rigorous demands of ultrahigh vacuum environments and capable of maintaining seal integrity through high temperature excursions. Del-Seal™ CF flanges are 100% compatible with the equivalent Varian Conflat® metal seal flanges.

Del-Seal™ CF flanges are classified as genderless flanges, since the seal geometries on both mating flanges are identical. They are available in both rotatable and nonrotatable geometries with clearance or threaded bolt holes, and for standard tube sizes from .250 to 14.0 inches in diameter. Metal Industries discourages resealing a Del-Seal™ CF flange with a previously used metal gasket and strongly recommends the installation of a new metal gasket every time a flange is fastened. When flange fasteners are tightened to their specified sealing torques a gap will remain between the mating flanges, this is normal and desirable. Tightening the flanges metal-to-metal is not necessary to achieve a UHV hermetic seal.

OFE copper, which stands for “Oxygen Free Electronic or Electrolytic grade Copper”, is the metal gasket material of choice for most UHV sealing applications. For special applications which preclude the use of pure copper, various metal gasket materials including nickel, aluminum and silver plated copper are also available.

Metal Industries can also provide specialized elastomer gaskets made of DuPont Dow Elastomers Viton® material. These can be used within existing UHV systems fitted with Metal Industries Del- Seal™ CF flanges and allow frequent and repeated assembly and disassembly. These elastomer gaskets have rectangular cross sections and fit within the standard knife edge seal geometry of a Del-Seal™ CF metal seal flange. Note that the use of elastomer gasket seals in metal seal flanges will reduce the system’s minimum and maximum temperatures and its vacuum ratings to -20°C, 150°C and 1x10-8 Torr, respectively. The torque required to make a leak tight seal with an elastomer gasket will be reduced to 7-10 lb-ft. 

Specifications
Flanges	304ss
Gaskets	OFE Copper or Viton® elastomer
Bolts	300ss and silver plated Alternate material 18-8 SS bolts are supplied
Fastening
Bolt head type	Hexagonal, socket or 12-point head
Nut Type	Hexagonal or two hole plate nuts
Bolt Size Fractional Size Torque .160-32 UNC 8-32 7 lb-ft .250-28 UNF 1/4-28 12 lb-ft .312-24 UNF 5/16-24  15 lb-ft .375-24 UNF 3/8-24 26 lb-ft .500-20 UNF 1/2-20 33 lb-ft .625-18 UNF 5/8-18  95 lb-ft
Elastomer seal,all sizes	7-10 lb-ft
Vacuum Range
Del-Seal™ CF or Wire Seal	1x10-13 Torr
Elastomer seal	1x10-8 Torr
Temperature Range
Del-Seal™ CF or Wire Seal	-200°C to 450°C
Elastomer seal	-20°C to 150°C Intermittent: 200°C

We provide flanges to meet International, military and other specifications to meet your needs.

We export to: Exporter & Suppliers of Del seal cf flanges in uae, saudi arabia, qatar, oman, malaysia, sinagapore, indonesia, sudan, israel, south africa, kenya etc.

Flanges Packing

Metal Industries also emphasis on the packaging . The Del seal cf flanges are packed in wooden corrugated boxes foiled in bubble wraps.

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Flanges :: Flange Standard, Fitting Standard, Pipe Standard, Valve Standard
ANSI Flange	DIN Flange	EN Flange
ASME Flange	JIS/KS Flange	GB Flange
GOST Flange	BS Flange	UNI / Api Flange
Flanges ::
Blind Flanges	Reducing Threaded Flanges	Lap Joint Flanges
Flange Gaskets	Threaded Flanges	Socketweld Flanges
Flanges Bolts	Ring Flange	Spectacle Blind Flanges
Weld Neck Flanges	Orifice Flange	Slip-On-Flanges
High Hub Blinds Flanges

We are exporting Del seal cf flanges to more than 40 countries like UAE, EGYPT, TURKEY, uae, saudi arabia, qatar, oman, malaysia, sinagapore, indonesia, sudan, israel, south africa, kenya, Malaysia, Iran, Iraq, Saudi Arabia, Bahrain, Qatar, yemen, Kuwait, Argentina, Palestin, Algeria, Italy, Tunisia, Oman, Mauritania, USA, Bangladesh, Lebanon, Canada, Vietnam, INDIA, Sudan, Syria, Morocco, Libya, Jordon, And many more.

we also have our sales representatives to understand the requirements of our clients, we maintain ready stock of Del seal cf flanges in Cities like Abu Dhabi, Riyadh, Manama, Muscat, Doha, Dubai, Damascus, Khartoum, Beirut, Jeddah, Aleppo, Alexandria, Algiers, Amman, Mosul, Cairo, Baghdad, Dammam, Casablanca, Basra, Mecca, Tripoli, Rabat, Sana'a, Arbil, Hilla, Port Said, Marrakech, Medina, Al Hudaydah, Omdurman, Damietta, Homs, Kafr Dawar, Benghazi, Fez, Bahri, Nouakchott, Sulaymaniyah, Safi, Zarqa, Oran, Kirkuk, Ismailia, Tunis, Agadir, Tangier, Sharjah, Shibin El Kom, Misratah, Matrah, Aden, Najaf, Karbala, Latakia, Sousse, Meknes, Gaza, Fallujah, Aswan, Kassala, Al-Ubayyid, Sohag, Kuala Lumpur, Penang, Kuching & many more.