Plug Gaskets Manufacturer, Supplier & Exporter in India
Jade Alloys is a Mumbai-based manufacturer, supplier and exporter of Plug Gaskets, trusted by procurement engineers and plant maintenance teams across 40+ countries. With over a decade of precision gasket manufacturing experience, we supply ISO 9001:2015 certified sealing solutions for the most demanding industrial applications from Fin-Fan heat exchangers in Saudi Arabia to offshore platforms in the North Sea.
Our Plug Gaskets are flat, ring-type sealing components designed to create a tight, leak-proof seal between header plugs and plug sheets in heat exchangers and pressure vessels. Available in Soft Iron, Stainless Steel, Duplex Steel, Super Duplex Steel, Nickel 200/201, Inconel, Hastelloy, Monel, Titanium and other super alloys, we manufacture to your exact size, material and coating requirement. Standard sizes are available from ready stock; custom machined gaskets are produced to drawing within a 2–3 week lead time.
Our Range of Plug Gaskets
We manufacture and supply a comprehensive range of industrial Plug Gaskets, each engineered for reliable sealing performance across diverse process conditions. Our in-house machining capability allows us to produce both standard sizes from stock and fully custom gaskets based on your drawings and specifications.
Soft Iron Plug Gaskets
Commercially pure wrought iron, max 90 HB. Excellent compressibility for metal-to-metal sealing. Ideal for heat exchangers and high-pressure systems operating up to 400°C.
View Soft Iron Plug Gaskets →Stainless Steel 304 Plug Gaskets
Grade 304 austenitic stainless steel. Excellent corrosion resistance, high strength and wide temperature range. Suitable for chemical plants and cryogenic applications.
View SS 304 Plug Gaskets →Nickel Plug Gaskets
Nickel 200/201 alloy. Exceptional corrosion resistance in caustic environments, food processing and chemical industries. Low carbon content (Ni 201) for elevated-temperature service.
View Nickel Plug Gaskets →All Available Plug Gasket Materials
| Material | Grade / Alloy | Key Properties | Typical Application |
|---|---|---|---|
| Soft Iron | Commercially Pure Wrought Iron | Max 90 HB, excellent compressibility, -60°C to +400°C | Heat exchangers, pipeline pressure test points |
| Stainless Steel | 304, 316, 321, 316L | High corrosion resistance, wide temp range | Chemical plants, cryogenic systems |
| Nickel | Nickel 200 / Nickel 201 | Caustic resistance, low carbon for high-temp service | Caustic soda plants, food processing |
| Duplex Steel | UNS S31803 / S32205 | High strength + corrosion resistance | Seawater systems, desalination |
| Super Duplex Steel | UNS S32750 / S32760 | Very high pitting resistance (PREN > 40) | Offshore oil & gas, chloride environments |
| Inconel | Inconel 625, 718, 825 | Extreme temperature and corrosion resistance | Gas turbines, aerospace, sour gas |
| Hastelloy | Hastelloy C276, C22 | Resistance to reducing and oxidising media | Chemical reactors, HCl and H2SO4 environments |
| Monel | Monel 400, K500 | Excellent in seawater, hydrofluoric acid | Marine, oil refining, HF acid alkylation |
| Titanium | Grade 2, Grade 5 (Ti-6Al-4V) | Lightweight, excellent corrosion resistance | Seawater desalination, aerospace |
Plug Gaskets Specifications
Our Plug Gaskets are manufactured to international standards including ASME B16.20 and API specifications. The table below covers the standard dimensional and material parameters. Custom specifications are available on request — submit your drawing for a tailored quotation.
| Parameter | Specification |
|---|---|
| Inner Diameter (ID) | 20 mm to 80 mm (Plug size 7/8″ to 2″) |
| Outer Diameter (OD) | 26 mm to 86 mm |
| Thickness (T) | 1 mm to 5 mm |
| Tolerances | OD / ID / T: +0.20 / -0.20 mm |
| Form | Flat ring / annular gasket |
| Materials Available | Soft Iron, SS 304/316, Duplex, Super Duplex, Nickel 200/201, Inconel, Hastelloy, Monel, Titanium, and other super alloys |
| Coatings Available | Zinc Plated, Phosphated, PTFE Coated, Nickel Plated, Sand Blasted, Drum Polished, and specialty coatings on request |
| Standards | ASME B16.20, API — or per client specification |
| Test Certificates | Material Test Certificate (MTC) and dimensional inspection report available on request |
Standard Stock Sizes of Plug Gaskets
| OD (mm) | ID (mm) | Thickness (mm) | Plug Size (inch) | Availability |
|---|---|---|---|---|
| 27 | 21 | 2 | 7/8″ | Ready Stock |
| 36 | 30 | 2 | 1″ | Ready Stock |
| 42 | 36 | 2 | 1¼” | Ready Stock |
| 48 | 42 | 2 | 1½” | Ready Stock |
| Custom sizes | 20–80 | 1–5 | As required | 2–3 weeks lead time |
Ready Stock
Dispatch within 3–5 working days for standard sizes in Soft Iron, SS 304 and Nickel. Standard sizes: OD 27–48mm. Immediate availability for urgent requirements.
No MOQ
No minimum order quantity for standard sizes and materials. Order the exact quantity you need suitable for maintenance teams and project procurement alike.
Custom Orders
Non-standard sizes, special materials, or bespoke coatings available with a 2–3 week lead time. Submit your drawing or dimensions for a tailored quote within 24 hours.
Applications of Plug Gaskets
Plug Gaskets are used wherever a header plug must be sealed against a plug sheet to prevent leakage under pressure. Their primary function in Fin-Fan and air-cooled heat exchangers makes them essential components in upstream and downstream oil and gas processing. Jade Special Metals supplies Plug Gaskets across the following industries:
- Oil & Gas: Pipelines, offshore platforms, refineries, wellhead assemblies and gas processing facilities requiring high-pressure, leak-free sealing.
- Heat Exchangers: Fin-Fan / air-cooled heat exchangers — sealing header plugs to plug sheets. Standard operating procedure in all major heat exchanger maintenance programmes.
- Petrochemical & Chemical: Reactors, distillation columns and process piping in refineries and chemical plants handling aggressive fluids and elevated temperatures.
- Power Generation: Boilers, condensers, turbines and heat recovery steam generators (HRSG) in thermal, nuclear and combined-cycle power plants.
- Marine & Offshore: Seawater cooling systems, ballast systems, offshore FPSO and jack-up rigs where corrosion-resistant alloys are required.
- Pharmaceutical & Food: Hygienic process piping and heat exchangers in pharmaceutical manufacturing and food processing requiring Nickel or SS 316 gaskets.
Countries We Export Plug Gaskets
Jade Special Metals exports Plug Gaskets to over 40 countries worldwide. Our international distribution network and experienced export team ensure timely delivery with full documentation including commercial invoices, packing lists, certificates of origin and Material Test Certificates.
Frequently Asked Questions — Plug Gaskets
What is a Plug Gasket and where is it used?
A Plug Gasket is a flat, ring-type sealing component placed between a header plug and the plug sheet of a heat exchanger or pressure vessel. It creates a leak-proof, metal-to-metal seal that prevents fluid or gas from escaping under high pressure and temperature conditions. They are standard components in Fin-Fan and air-cooled heat exchanger maintenance, as well as in oil and gas pipelines, boilers and petrochemical reactors.
What materials are Plug Gaskets available in?
Jade Special Metals supplies Plug Gaskets in Soft Iron (commercially pure wrought iron), Stainless Steel 304 and 316, Duplex Steel (UNS S31803/S32205), Super Duplex Steel (UNS S32750/S32760), Nickel 200 and 201, Inconel 625 and 718, Hastelloy C276 and C22, Monel 400, Titanium Grade 2 and Grade 5, and other super alloys as per customer requirement.
What sizes are available for Plug Gaskets?
Standard Plug Gaskets are available from OD 27 mm to OD 86 mm, with Inner Diameter 20 mm to 80 mm (corresponding to plug sizes 7/8 inch to 2 inch) and thickness 1 mm to 5 mm. Stock sizes include OD 27×ID 21×2 mm, OD 36×ID 30×2 mm, OD 42×ID 36×2 mm, and OD 48×ID 42×2 mm. Custom sizes are manufactured to drawing with a 2–3 week lead time.
What coatings are available for Plug Gaskets?
Available surface coatings include Zinc Plated, Phosphated, PTFE Coated, Nickel Plated, Sand Blasted and Drum Polished. Specialty coatings are available on request. Coatings are selected based on the operating environment and fluid compatibility requirements.
What tolerances are maintained for Plug Gaskets?
Tolerances for Outer Diameter (OD), Inner Diameter (ID) and Thickness (T) are maintained at +0.20 / -0.20 mm for all standard Plug Gaskets. Tighter tolerances are available for critical applications — please specify in your enquiry.
What is the difference between a Plug Gasket and a Tube Plug?
A Plug Gasket is a flat ring gasket placed between a header plug and a plug sheet to create a sealed joint. A Tube Plug is a mechanical device inserted into a tube end to permanently or temporarily seal a leaking tube. Both are used in heat exchanger maintenance, but they serve different sealing functions.
How do I get a price for Plug Gaskets?
Contact us via the quote form below, by email at sales@jadealloys.com or by phone at +91 9987685906. Please provide the material, OD, ID, thickness, quantity and any coating requirement. We respond with a competitive price within 24 hours.
