When nickel, titanium or zirconium alloys are not enough...

JG/JP Gasket
 JGJP Basic Image
  • Temp: Cryogenic to 1830°F / 1000°C
  • Pressure: Vacuum to 5800psi / 400bar
  • Pressure class: 1500 / PN400
  • Carrier metal:  Stainless & Specialty alloys
  • Thickness: 0.098" to 0.394" (2.5 - 10mm)
  • Max dimension: 144in / 4000mm
  • Extreme pressure & temperatures
  • Corrosive media, H2, hazardous service
  • Replaces: Spiral Wound / Kammprofile

Overview of Tantalum Gaskets

Tantalum gaskets are best known for its unmatched corrosion resistance and chemical inertness. Tantalum has a similar corrosion resistance to that of glass, but all of the typical mechanical and electrical properties of a metal. Tantalum semi-metalic gaskets with a PTFE or graphite soft sealing material are available in the Revoseal JG / JP design which is usable in the most corrosive environments and has a pressure rating of from vacuum to 5800psi / 400bar. WIth a leak rate 15000x less than spiral wound gaskets, you can be sure that hazardous fumes and vapors will be conatained creating the safest work environment possible. Furthermore, our Tantalum gaskets are customizable and accomodate dissimilar flange faces and large gaps.

Tantalum gaskets are also extremely stable at high temperatures, since tantalum has a melting point around 3000°C. High temperature applications require vaccum or inert gas since tantalum may embrittle when used in oxygen rich environments above 250°C.  Tantalum gaskets are also one of the most bio-compatible metals available and is also radio-opaque due to its high density (16.68 g/cm3).

Lead time & Availability for Tantalum Gaskets

Custom Availability
Tantalum gaskets can be made to order in both standard and custom designs with normal lead time of approximately 4 weeks. Be sure to contact us for specific lead times and any expediting needs.

  • Max dimension: 144in / 4000mm
  • Custom to print available
  • NACE MR0175, ASTM, ASME, DFAR and Domestic available

Expediting Options
Lead Time is important?  You have down equipment?  No problem.  Just let us know what you need and we will do our very best to accommodate.

Tantalum Grades, Chemistry & Specifications

Tantalum (Commercially Pure)

Commercially pure tantalum metal 99.95% pure tantalum as a minimum and has the best corrosion resistant properties of any metal when it come to most acids. While its corrosion resistance is exceptional, it is relatively soft and mechanically similar in strength to copper.

Specifications: UNS R05200

Tantalum Chemistry

Tantalum 2.5% Tungsten (Ta-2.5W)

This grade of tantalum alloyed with 2.5% tungsten provided better overall strength while maintaining its exception corrosion resistant properties. For tantalum fasteners & flanges applications this is usually preferred.

Specifications: UNS R05252

Tantalum 2.5% Tungsten Chemistry

Physical Properties

  • Density 16.6 g/cc
  • Melting Point 3290 K, 2996°C, 5462°F
  • Boiling Point 5731 K, 6100°C, 9856°F
  • Coefficient of Thermal Expansion (20°C) 6.5 x 10(-6) / °C
  • Electrical Resistivity (20°C) 13.5 microhms-cm
  • Electrical Conductivity 13% IACS
  • Specific Heat .036 cal/g/°C
  • Thermal Conductivity .13 cal/cm(2)/cm°C/sec

Tantalum Tensile Data

Tensile Data


Tantalum Iso-Corrosion Curves

Specialty Metal H2SO4 Iso-Corrosion Curve

Specialty Metal HCl Iso-Corrosion Curve

Tantalum Corrosion Resistance Table


For all temperatures up to at least 302°F (150°C) unless otherwise indicated 

Acetic acid
Acetic anhydride
Air,<300°C (570°F)
Aluminum chloride
Aluminum nitrate
Aluminum sulfate
Ammonium bicarbonate
Ammonium carbonate
Ammonium chloride
Ammonium nitrate
Ammonium acid phosphate
Ammonium phosphate
Ammonium sulfate
Amyl acetate or chloride
Aniline hydrochloride
Aqua regia
Barium carbonate
Barium chloride
Barium hydroxide
Barium nitrate
Benzoic acid
Body fluids
Boric acid
Bromine, dry, <300°C (570°F)
Bromine, wet
Butyric acid
Calcium bicarbonate 
Calcium bisulfates
Calcium bisulfites
Calcium carbonate
Calcium chloride
Calcium hydroxide
Calcium hypochlorite
Carbolic acid
Carbon dioxide
Chloric acid
Chlorinated brine

Chlorine, dry, <250°C (480°F)
Chlorine, wet, <350°C (662°F)
Chlorine oxides
Chloroacetic acid
Chromic acid
Chrome plating solutions
Citric acid
Cleaning solutions
Copper salts
Dichloroacetic acid
Ethylene dibromideEthyl sulfate
Fatty acids
Ferric chloride
Ferric sulfate
Ferrous sulfate
Food stuffs
Formic acid
Graphite, <1000°C
Hydroiodic acid
Hydrobromic acid
Hydrochloric acid
Hydrogen bromide, <400°C
Hydrogen chloride, <350°C
Hydrogen iodide
Hydrogen peroxide
Hydrogen sulfide
Hydroxyacetic acid
Hypochlorus acid
Iodine, <300°C (570°F)
Lactic acid
Lead salts
Magnesium chloride
Magnesium hydroxide
Magnesium sulfate

Maleic acid
Manganous chloride
Methyl alcohol
Methylsulfuric acid
Mineral oils
Mixed acids (sulfuric-nitric)
Motor fuels
Nickel salts
Nitric acid
Nitric acid, fuming
Nitric oxides
Nitrogen, <300°C (570°F)
Nitrous acid
Nitrosyl chloride
Organic chlorides
Organic acids
Organic esters
Organic salts
Oxalic acid
Oxygen, <300°C (570°F)
Pechloric acid
Petroleum products
Phosphoric acid, <4ppmF,<180°C
Phosphorus, <700°C (1290°F)
Phosphorus chlorides
Phosphorus oxychloride
Phthalic anhydride
Pickling acids, except HNO3-HF
Potassium bromide
Potassium chloride
Potassium dichromate
Potassium ferricyanide
Potassium iodine-iodine
Potassium nitrate
Potassium permanganate

Potassium sulfate
Potassium thiosulfate
Propionic acid
Sea water
Silver nitrate
Sodium acetate
Sodium aluminate
Sodium bisulfate, solution
Sodium bromide
Sodium chlorate
Sodium chloride
Sodium citrate
Sodium cyanide
Sodium dichromate
Sodium hypochlorite
Sodium nitrate
Sodium nitrite
Sodium phosphate
Sodium silicate
Sodium sulfate
Sodium sulfide
Sodium sulfite
Sodium thiosulfate
Stearic acid
Succinic acid
Sulfamic acid
Sulfur, <500°C (930°F)
Sulfur chlorides
Sulfur dioxide
Sulfuric acid, to 175°C (350°F)
Sulfurous acid
Sulfuryl chloride
Tannic acid
Tartaric acid
Thoinyl chloride
Tin salts
Zinc chloride
Zinc sulphate


Air,>300°C (570°F)
Ammonium hydroxide
Fluoride salt
Hydrofluoric acid

Hydrogen, >300°C (570°F)Hydrogen fluoride
Oleum (fuming sulfuric acid)
Potassium carbonate
Potassium hydroxide, dilute

Potassium hydroxide, conc.
Potassium pyrosulfate, molten
Sodium bisulfate, molten
Sodium carbonate
Sodium hydroxide, dilute

Sodium hydroxide, conc.
Sodium pyrosulfate, molten
Sulfur trioxide
Sulfuric acid, >175°C (350°F)

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