top of page


Gaskets are mechanical seals that are used to fill the gap between two or more mating surfaces to prevent leaks or seepage of fluids or gases. Gaskets are typically designed to conform to the shape of the mating surfaces and can be either flat or contoured. They are often used in conjunction with bolts or other fasteners which apply pressure and compress the gasket material, creating a tight seal.

SRT can supply premium-quality gaskets. Our gaskets cater to the requirements of the following industries.


  1. Water

  2. Water treatment plants and Sewerage

  3. Oil & Gas

  4. Pipelines & Refineries

  5. Petrochemicals

  6. Chemical & Pharmaceutical Plants

  7. Cement, Paper & Pulp

  8. Fertilizers & Sugar Plants

  9. Steel & Power Plants

  10. Heat Exchanger

  11. Valves, Pumps & Blowers Compressors, and Burners

  12. Steam & Gas Turbines

  13. Defense & Railways

  14. Navy & Ship Building

  15. Aircraft Engines

  16. Internal Combustion Engines

  17. Pressure Regulators & Strainers

  18. Sight Glasses & Motors

  19. OEMs Etc.


We can provide gaskets of the following kind.



Ring joint gaskets are identified by an R, RX, and BX numbers that relate to flange sizes (NPS), pressure class, and the appropriate flange standards. Ring joint gaskets are either octagonal or oval in cross-section. These basic shapes are used in pressures up to 10,000 psi. The dimensions are standardized & require specially grooved flanges.

RTJ" (Ring Type Joint) gaskets are manufactured in accordance with API-6A and ASME B16.20 specifications. Materials include soft iron, low carbon steel, 4-6 chrome (F5), 304, 304L, 316, 316L, 347, Monel, Inconel, Incoloy, Duplex, Super Duplex, etc.



The BX ring gasket differs from the standard oval or octagonal shape in a way that it is square in cross-section and tapered in each corner. BX can only be used in API 6BX flanges. RX ring gaskets are similar in shape to the standard octagonal ring joint gasket but their cross-section is designed to take advantage of the contained fluid pressure in effecting a seal. They are both made to API 6B specifications.




Spiral wound gaskets are metallic gaskets consisting of a V or W-shaped metal strip wound in a spiral around a center filler material. The winding of the metal strip and filler material creates a series of sealing layers, with the metal strip providing structural support and the filler material providing sealing properties.

The metal strip is typically made of stainless steel or other alloys, and the filler material can be graphite, PTFE, or other soft materials that provide excellent sealing properties. The outer ring of the gasket is often made of carbon steel or stainless steel and is used to center the gasket and provide additional structural support. The outer ring is also known as the centering ring.

Spiral wound gaskets are widely used in high-temperature and high-pressure applications, such as in the oil and gas industry, chemical processing, and power generation. They are preferred over other types of gaskets in these applications because of their ability to withstand extreme temperatures and pressures, their resilience, and their ability to maintain a tight seal over a long period of time.

Spiral wound gaskets are available in a range of sizes and materials to suit specific applications and are designed to conform to standard flange dimensions. They are more resilient than any other metallic gasket. They can compensate for flange movement that may occur due to temperature gradients, variations of pressure, and vibration.

They can be used from cryogenic to approximately 2000° degrees Fahrenheit over the complete temperature range. This type of Gasket can be used in all pressures from vacuum to the standard 2500 PSI flange ratings.

Please click on the selection chart below to view the selection criteria for the spiral wound gaskets.

Selection Chart- Spiral wound gaskets


Jacketed Gaskets basically consist of a filler material enclosed in a metal jacket. This type of gasket is mainly used in heat exchangers. The jacketed gasket can come in different types such as double-jacketed, single-jacketed, Corrugated metal Jacketed with Graphite on Top and Bottom

The jacketed gasket typically has the following information included on it: 

  1. Manufacturer name or trademark

  2. Flange Size (NPS)

  3. Pressure class

  4. Jacketed material abbreviation

  5. Filler material abbreviation

  6. Flange Identification to which it is suited; for example B 16.47 A or B16.47 B

  7. Gasket manufactured as per ASME 16.20 designation



Kammprofile gaskets are a type of metal gasket used in high-pressure and high-temperature applications, typically in industries that require sealing under extreme conditions. They are made of a solid metal core, usually stainless steel, with concentric serrations on both sides. The serrations are typically cut at an angle and are designed to provide improved sealing performance compared to traditional flat gaskets. The serrations also allow the gasket to deform and conform to uneven sealing surfaces, which can help to prevent leaks. Kammprofile gaskets are typically used in applications where the pressure and temperature are too high for traditional gasket materials like rubber or graphite.

The Kammprofile is the preferred gasket when improved performance at low seating stresses is required. It features excellent anti-blowout properties associated with the reliability of a solid metal-to-metal seal combined with soft sealing face to ensure a tighter joint. Kammprofile is an ideal replacement for problem applications associated with jacketed gaskets

Features of Kammprofile Gaskets


PTFE (polytetrafluoroethylene) gaskets are a type of gasket made from a synthetic material known for its high-temperature resistance, chemical inertness, and low coefficient of friction


Below are some of the features of the PTFE Gaskets

  • Ability to withstand a wide range of temperatures, from -250°C to +260°C, making them suitable for use in both cryogenic and high-temperature applications.

  • PTFE gaskets are highly resistant to most chemicals, including acids, bases, and solvents

  • Smallest coefficient of friction in plastic 0.04

  • Best aging life in plastic, high lubricants


SRT can offer a wide range of elastomeric gaskets from 15NB to 2000 NB made from polymer, natural, Nitrile, EPDM, Neoprene, SBR, Viton, Silicon, Butyl, and Lead-Free rubber grades.  The products are manufactured from premium quality rubber that has excellent elasticity that enables our rubber gaskets to maintain perfect seals after creating pressure on the contact surface. Our gaskets are manufactured to several quality standards and are accredited with several quality certifications. Including compatibility with AS 1646 and AS 681.1


Insulating sets are essentially used for pipeline flange corrosion protection, where a seal is required between dissimilar flange materials. The use of dissimilar metallic flanges with a conductive gasket material accompanied by a suitable electrolyte may set up a galvanic cell that will corrode the anodic metal. Insulating sets are also used to electrically isolate flange joints, preventing the flow of electrostatic charge along the pipeline.

SRT offers three standard types of insulating sets to suit raised face, flat face, and ring grooved flanges.

FLANGE INSULATING KITS (High Pressure/Low Pressure)

  1. Metallic Core Gasket

  2. API 6 FB Fire Test gasket

  3. PTFE Seal at the bore of the metallic gasket

  4. RTJ Type G10/G11 Insulating Gasket

  5. Nitrile Rubber coated Flange Insulating Gaskets

  6. Viton 'O' Ring / PTFE Spring Energized Insulating Gaskets


SRT can supply Monolithic Insulating Joints in accordance with the highest technical standards which guarantees that mechanical requirements (torque, traction, bending, etc.) are met for the specific needs of a plant. They are designed according to ASME VIII, Division I

We can provide certificates for all non-destructive tests such as

  1. Hydrostatic Test

  2. Pneumatic Test

  3. Radiographic Test

  4. Ultrasonic Test

  5. Magnetic Particle Test

  6. Penetrant Test

  7. High Voltage Breakdown Test

  8. Electrical Resistance Test

Our Products


U 10/ 35 Durham Street,
St. Lucia-4067, Queensland, Australia.


07 3705 9644



  • LinkedIn
bottom of page