The spiral wound gasket,
done properly.
GritGasket manufactures spiral wound gaskets to ASME B16.20 / API 601 — every flange class, every winding metal, every filler. Cut to non-standard sizes in our Sydney workshop and shipped to refineries, petrochemical plants, and process industries across Australia and New Zealand.
Built to ASME B16.20 / API 601
Every gasket wound, machined, and inspected to the standard it sits in. Materials certificates and dimensional reports supplied with every order on request.
Any Configuration, Any Size
Standard NPS or hand-machined to your drawing. Carbon steel through Inconel windings. Graphite, PTFE, mica or ceramic fillers. Inner rings on Class 600+ as standard.
Engineered Answers
Filler selection, seating-stress calculations, bolt-up torque to ASME PCC-1 — written by the engineers who actually specify and wind the gasket.
Spiral Wound Gaskets — Every Configuration
Class 150 through 2500. Carbon steel, stainless, Inconel, Hastelloy, Monel. Graphite, PTFE, mica, ceramic fillers. With or without inner ring.
Class 150 — CS / 304SS / Graphite
The workhorse spiral wound gasket. ½" to 24" NPS, refinery and steam service to 450°C.
Learn more →Class 300 — 316SS / 316SS / PTFE
All-316 with PTFE filler for acids, alkalis, and high-purity media. -200 to +260°C.
Learn more →Class 600 — 316SS w/ Inner Ring
Hydroprocessing, HP steam, heat-exchanger headers. 316SS inner ring prevents filler erosion.
Learn more →Class 900 — Inconel 625 / Graphite
Hydrocracker effluent, sour gas, hot service to 650°C. Resists creep and stress-corrosion cracking.
Learn more →Mica-Filled — to 1000°C
Flue gas, exhaust, regenerator service where graphite would oxidise. Phlogopite mica filler.
Learn more →Custom Sizes & Drawings
Non-standard ODs, IDs, or full custom profiles. DXF, PDF, or sample — we wind to match.
Learn more →Free Engineering Tools
Pick the right filler for your service. Calculate the bolt-up torque to ASME PCC-1. Specified by the team that winds the gasket.
Tell us about the joint.
Drawings, specs, or a photo of the old gasket — we'll come back with a quote and a recommendation. Usually within the business day.