Different Types of Gaskets Used in Pipeline Flanges in the Oil and Gas Industry
author: www.qishine.com
2026-03-03
In the oil and gas sector, reliable sealing is essential for safety, leak prevention, pressure-integrity assurance and long-term stable operation of equipment. Gaskets play a critical role in flange connections, creating a tight seal between two mating surfaces under varying pressure and temperature conditions.
Below are the most commonly used gasket types for oil- and gas-service applications; each is selected according to operating conditions, flange type and process requirements.
1. Spiral-wound gasket
Suitable for high-pressure and high-temperature duties. Offers excellent resilience and sealing performance, especially for critical process piping.
Suitable for high-pressure and high-temperature duties. Offers excellent resilience and sealing performance, especially for critical process piping.
Spiral Wound Gasket
2. Non-asbestos sheet gasket
Intended for medium- and low-pressure services. It is a safe replacement for asbestos gaskets and is widely used with water, steam, oil and gas media.
Intended for medium- and low-pressure services. It is a safe replacement for asbestos gaskets and is widely used with water, steam, oil and gas media.
Non-Asbestos Sheet Material Gasket
3. Spiral-wound gasket without inner ring
Applied in less demanding services where bore protection is unnecessary and cost control is important.
Applied in less demanding services where bore protection is unnecessary and cost control is important.
Spiral-wound gasket without inner ring
4. Rubber sheet gasket
Used in low-pressure systems such as water lines, utility services and non-hazardous fluid circuits.
Used in low-pressure systems such as water lines, utility services and non-hazardous fluid circuits.
Rubber Sheet Material GasKets
5. PTFE envelope gasket
Designed for corrosive and aggressive chemical media. The PTFE envelope provides outstanding chemical resistance, while the filler core gives the gasket mechanical strength.
Designed for corrosive and aggressive chemical media. The PTFE envelope provides outstanding chemical resistance, while the filler core gives the gasket mechanical strength.
PTFE Envelope Gasket
6. Ring-type-joint (RTJ) gasket
Employed in extremely high-pressure and high-temperature environments, e.g., upstream oil and gas pipelines. These gaskets require specially machined RTJ flanges.
Employed in extremely high-pressure and high-temperature environments, e.g., upstream oil and gas pipelines. These gaskets require specially machined RTJ flanges.
Ring Type Joint Gaskets (RTJ)
Proper gasket selection is crucial to avoid leaks, unplanned shutdowns, safety hazards and maintenance issues. Pressure, temperature, fluid type, flange surface finish and bolt loading must all be considered.
Understanding the types of gaskets can help purchasing staff quickly locate the gaskets that engineers require, thereby facilitating quicker problem-solving.
If you notice any other commonly used gasket types that are not listed, or if you would like to know about the classification comparison based on pressure and temperature grades, please feel free to let us know!
Qishine is ideal choice for EPC companies and project contractors.
Website: www.qishine.com
Email: qishine@qishine.com
Tel: 0592-5225595
Email: qishine@qishine.com
Tel: 0592-5225595
WhatsApp: +86 15960259563
+86 15985833169
How to Distinguish Different Types of Nuts
Comparison of Shipping Stud Bolts and Nuts Assembled vs Separately
Related Article
Insights from a Case Study on Exporting B8M Fasteners.Recently, during our final outgoing inspection of a batch of B8M stainless steel fasteners destined for Portugal, we discovered varying degrees of burrs on the edges of the bolt hex heads.
How to Efficiently Remove Burrs from Bolt Edges
Insulating Gasket Procurement Pitfalls: From "Price Traps" to "Supplier Selection"
What pitfalls should you watch out for when purchasing insulating gaskets
As a classic modified PTFE gasket material from Garlock, Gylon 3500 is widely used in petrochemical, chemical, and other industries for its excellent resistance to strong acids, solvents, and anti-creep properties.
How to Buy Genuine Gylon 3500 Insulating Gaskets at Competitive Prices in China
