Spiral wound, Ring Type Joint, Kammprofile and sheet gaskets in Duplex, Super Duplex, Inconel, Monel and exotic alloys — engineered for the harshest pressure, temperature and corrosion service.
A flanged joint is only as reliable as its weakest component. Mismatched gaskets, bolts and flanges are the single largest source of leak-path failures in process piping.
EMG now supplies the whole joint — pipe, fittings, flanges, stud bolts, nuts and gaskets — engineered, certified and documented together, so procurement teams remove the specification risk of buying sealing components separately.
Hydrocarbon or hazardous chemical release from a failed flanged joint is one of the highest-consequence failure modes on any process plant.
A single leaking flange can shut down a train or platform — losses run into millions per day. Correct gasket selection avoids the shutdown, not just the leak.
Gasket compression stress, bolt load, and flange rating must be matched. Ad-hoc component swaps break the ASME PCC-1 joint assumption.
Every gasket ships with EN 10204 3.1 MTRs, dimensional inspection and heat-number traceability — audit-ready for oil & gas, LNG and nuclear-adjacent projects.
Low-emission SWG and Kammprofile designs help operators meet API 622, ISO 15848 and EPA fugitive-emissions requirements.
NACE MR0175 / ISO 15156 compliant Inconel 625 / 825 windings for sour hydrocarbon service — hardness-controlled and certified.
Gasket Portfolio — Page 03Matched to service medium, temperature and corrosion regime — from cryogenic LNG to 650°C+ refinery service.
304 / 304L / 316 / 316L / 321 / 347 — general process, moderate temperature
F51 (S31803 / S32205) · F53 (S32750) · F55 (S32760) — chloride & CO₂ service
S31254 (254 SMO) — high-chloride seawater and produced-water systems
Inconel 600 / 625 / 718 / X-750 · Incoloy 800 / 825 — high-temp, sour service
Monel 400 / K500 · Hastelloy B2 / C276 / C22 — acid & extreme corrosion
Ti Gr.2 · Nickel 200 · Zirconium — chlorine and reactive chemical service
Soft iron · F5 · 304 / 316 / 316L · Inconel 625 · Duplex · Super Duplex
Flexible graphite · PTFE · Ceramic · Mica-graphite (Thermiculite) · CNAF
Graphite: –200°C to 550°C. PTFE: –200°C to 260°C. Mica-graphite: to 1,000°C in oxidising service.
SWG covers Class 150–2500. Above Class 900 or API 6A, specify RTJ (Type R, RX, BX).
PTFE resists nearly all chemicals. Graphite avoids strong oxidisers. Match winding to the corrosion regime.
Subsea, wellhead and topside flanged joints where a leak is not an option — supplied with matching studs, nuts and flanges, all under one MTR pack.
Materials — Page 04
Class 150 – 2500 process piping — SWG with graphite / PTFE filler, matched to A193 B7 / L7 studs.
API 6A Type R / RX / BX rings in Inconel 625, hardness-controlled for wellhead service.
Low-temp SWG with flexible graphite and PTFE for LNG loading arms, cold boxes and BOG lines.
Kammprofile with graphite facing for high-temp exchangers, columns and reactor flanges.
Metal jacketed and Kammprofile gaskets for boiler, turbine and steam header service.
Custom double-jacketed and metal-jacketed profiles — tube sheet, channel cover, shell flanges.
PTFE, envelope, Hastelloy C276 and Titanium windings for reactive and acid service.
NACE MR0175 / ISO 15156 compliant Inconel 625 / 825 windings with certified hardness.
Type E / F / D insulation kits with G10/G11 retainers, PTFE seals and insulating washers.
Applications & Testing — Page 05Adding gaskets to our range means EMG can now supply every component of a bolted flanged joint from one quality system. Fewer suppliers, fewer MTR packs, fewer specification gaps — and one team accountable for the joint working, not just the parts.
Weld neck, blind, slip-on. Duplex, Super Duplex, 6Mo. 1/2" – 48" OD.
A193 B7 / B7M / B8 / B8M / L7. UNC, 8UN, custom threads and lengths.
A194 2H / 2HM / 4 / 7 / 8 / 8M heavy hex. F436 hardened washers.
SWG, RTJ, Kammprofile, sheet — matched to flange, service and studs.
Complete Joint — Page 06
Metal-jacketed and Kammprofile gaskets for high-temperature steam service.
Corrosion-resistant gaskets for slurry, leach and acid service.
Send us these six inputs and we can quote — or pre-select — the right gasket for your flanged joint. When paired with our stud, nut and flange range, the joint arrives kitted, labelled and ready to install.
ASME B16.5 / B16.47 / API 6A — Class 150 through 10K / 15K.
Nominal bore, OD, and raised face / RTJ / flat face.
Hydrocarbon, steam, acid, chlorine, cryogenic, sour (H₂S).
Operating and design conditions — drives filler / winding choice.
Chloride, CO₂, H₂S — selects winding / RTJ ring alloy.
EN 10204 3.1 / 3.2, NACE, PED, NORSOK MDS as required.
Specification Guide — Page 07One supplier for flanges, studs, nuts and gaskets — one MTR pack, one accountable team.
Inconel, Monel, Hastelloy, Titanium and Super Duplex — held in ready-to-ship stock.
ISO 9001:2015. EN 10204 3.1 / 3.2, NACE, NORSOK MDS and API 6A documentation on request.
24/7 RapidBolt support for shutdown, turnaround and unplanned flange-leak recovery.
Bolt-load, PCC-1 assembly and material-selection guidance from qualified engineers.
Serving 25+ countries with staged, kitted-per-joint deliveries to site.
"A flanged joint is only as reliable as its weakest component. We supply the whole joint — engineered, certified and delivered together — so the leak-path failure never happens in the first place."
© 2026 Energy Materials Group. All rights reserved.
Send us your flange schedule and we will quote a full, matched flanged-joint package.