Custom-engineered spiral wound, ring joint, kammprofile and double-jacket gaskets from 26" to 52" nominal diameter, in high-performance alloys that most Indian suppliers cannot source or fabricate. ASME B16.47 Series A and B compliant. 300, 600 and 900 LBS pressure rated.
It is not a cost issue. It is a capability issue. Indian gasket fabricators have hard limits on size, on alloy, and on documentation. This is where we step in.
Standard fabricators in India cap out at 24" nominal pipe size in 304 or 316 stainless steels. If you need a 36" Hastelloy C-276 spiral wound gasket for a chlorine reactor, or a 48" Incoloy 825 ring joint for an offshore module, you are directed to import — with all the uncertainty that implies in lead time, customs, and documentation.
We custom-engineer large-diameter gaskets from 26" to 52" in every exotic alloy relevant to Indian process industry — from Incoloy 825 for sulphuric acid service to Zirconium 702 for nitric acid reactors. Every order is supplied with full mill test certificates and shipped CFR Mumbai with ASME documentation. Emergency lead times available.
PSU procurement departments, ASME-governed EPC projects, and PESO-compliant installations require specific documentation that most Indian suppliers cannot produce — ASME B16.47 compliance statements, third-party mill certificates for exotic alloys, and dimensional inspection reports. Missing documentation means a rejected order or a delayed plant commissioning.
Mill test certificates are provided for every alloy component — winding strip, inner ring, outer ring, and filler material. Dimensional inspection reports are generated for all gaskets above 24". ASME B16.47 compliance statements are issued with the delivery documentation. We do not charge separately for paperwork that should be standard practice.
Each alloy below is selected for a specific corrosive or high-temperature service. If your application is not listed, contact us — we also supply Inconel 625, Super Duplex 2507, and other specialist grades.
| Alloy | UNS | Key Properties | Typical Indian Application | Common Services |
|---|---|---|---|---|
| Incoloy 825UNS N08825 | N08825 | Excellent resistance to H₂SO₄ and H₃PO₄. Good in oxidising and reducing conditions. Stable to 450°C. | Sulphuric acid plants, fertiliser reactors, phosphoric acid service, seawater coolers | H₂SO₄H₃PO₄Seawater |
| Hastelloy C-276UNS N10276 | N10276 | Outstanding localised corrosion resistance. Performs in both oxidising and reducing acid environments. | Chlor-alkali plants, HCl service, FGD systems, waste acid handling, chlorinated solvent processing | HClCl₂FGD |
| Alloy 20UNS N08020 | N08020 | Designed for H₂SO₄ service. Superior SCC resistance. FDA-approved for pharma. | Sulphuric acid, pharmaceutical API, food processing, pickling baths | H₂SO₄Pharma APIFood |
| Duplex 2205UNS S32205 | S32205 | High strength. Excellent resistance to chloride-induced stress corrosion cracking. | Offshore platforms, desalination, pulp and paper mills, coastal petrochemical plants | OffshoreDesalinationSCC |
| Monel 400UNS N04400 | N04400 | Exceptional resistance to hydrofluoric acid. Good in marine and alkaline service. | HF alkylation units (refineries), brine handling, marine pipework, caustic service | HF acidBrineMarine |
| Nickel 200UNS N02200 | N02200 | Outstanding resistance to caustic soda and alkaline solutions. Food-grade suitable. | Caustic soda plants, chlor-alkali cells, food processing, semiconductor manufacturing | NaOHCausticFood |
| Titanium Grade 2UNS R50400 | R50400 | Excellent in oxidising environments, chlorine compounds and seawater. | Seawater desalination, offshore heat exchangers, chlorine-handling systems | SeawaterChlorineDesal. |
| Zirconium 702UNS R60702 | R60702 | Exceptional resistance to nitric acid at all concentrations. Outstanding in acetic acid service. | Nitric acid plants, acetic acid reactors, nuclear processing, high-purity pharmaceutical | HNO₃AceticNuclear |
Also available: 316L SS, 304 SS, Inconel 625, Super Duplex 2507, Alloy 59, 6-Mo austenitic. Winding material, filler and ring material specified independently. Submit your spec →
Our specialist capability starts where most Indian suppliers stop. Sizes from 26" to 52" are custom-engineered to your exact dimensional specification — no catalogue constraint.
Every application below involves large flanges in critical service — where a gasket failure means a shutdown, a safety incident, or a significant environmental event.
Crude distillation columns, vacuum towers and fractionators operate with large-diameter body flanges — typically 30" to 52" — in high-temperature hydrocarbon service. Turnaround-critical: a failed gasket during a planned shutdown extends the outage by days.
Reactor body flanges and nozzle connections in chlorine, sulphuric acid, nitric acid and mixed acid service demand alloy-specific sealing that cannot be compromised. The wrong alloy causes stress corrosion cracking within months.
Seawater-cooled heat exchangers on ONGC offshore platforms require large-diameter Titanium or Duplex gaskets resistant to flowing seawater corrosion. Standard 316 SS fails within one to two years in these services.
Main steam headers, feed water heater shells and condenser water boxes all involve large bore flanges requiring reliable sealing under thermal cycling. BHEL and NTPC projects frequently require ASME-documented supply.
NPCIL and BARC applications require gaskets with full traceability, nuclear-grade material certification, and documentation packages that most commercial suppliers cannot produce.
Large EPC projects frequently specify large-diameter exotic alloy gaskets via engineering specifications. Kriloha can respond to RFQ packages from EPC firms with full technical documentation.
Use the form below, email a drawing to sales@rubbersealsandgaskets.com, or send a photograph and dimensions. We accept DWG, DXF, PDF and JPEG formats.
Our engineering team reviews your specification and responds within 24 business hours with a price (CFR Mumbai), delivery lead time, and confirmation of alloy availability and documentation package.
Purchase order raised against our quotation. Payment by TT with 30% advance, or via your Indian agent. Production begins on receipt of the advance.
Pre-shipment dimensional inspection. Full documentation pack assembled. Shipped CFR Mumbai via airfreight (urgent) or sea freight (standard). Tracking provided.
The more detail you provide, the faster and more accurately we can respond. If you have a drawing, email it directly to sales@rubbersealsandgaskets.com — we'll review and respond within 24 hours.