Spiral wound, kammprofile, PTFE and graphite gaskets from an ISO 9001:2015 certified factory. Samples in 7–10 days. EXW / FOB / CIF / DDP.
NACE MR0175, API 607 and ASME B16.20 compliant options. Engineers reply within 24 hours.
Private labelling, custom packaging and drop-shipping for distributors in 100+ countries.
Ningbo Kaxite Sealing Materials Co., Ltd. is an ISO 9001:2015 certified manufacturer and supplier of spiral wound gaskets, kammprofile gaskets, ring joint gaskets, PTFE seals and braided packing. Since 2015 we have supplied over 4.5 million gaskets per year to plant engineers, EPC contractors, MRO buyers and industrial distributors in 100+ countries — helping them stop flange leaks, avoid unplanned shutdowns and meet ASME B16.20, API 6A, EN 1514 and NACE MR0175 requirements on high pressure, high temperature and aggressive media service.
Ningbo Kaxite Sealing Materials Co., Ltd. is an ISO 9001:2015 certified manufacturer and supplier of industrial gaskets, including spiral wound gaskets, kammprofile gaskets, ring joint gaskets, PTFE seals and braided packing. The company serves oil & gas, chemical, power generation, water treatment and marine industries in 100+ countries. Key procurement facts: MOQ from 100 pcs, sample lead time 7–10 days, trade terms EXW / FOB / CIF / DDP, custom OEM/ODM available. Every batch ships with a material test report, and EN 10204 3.1 / 3.2 certificates are available on request.
Selecting a gasket by size alone causes premature failure. Kaxite matches sealing material, construction and facing finish to your actual operating conditions — media, pressure, temperature cycling and flange standard — so the joint holds for the full maintenance cycle.
Spiral wound, ring joint and kammprofile gaskets for refineries, transmission pipelines, wellheads and offshore platforms. Rated from -196 °C cryogenic service up to 650 °C, with NACE MR0175 compliant metallurgy for sour gas. In a recent Gulf Coast refinery turnaround, our ASME B16.20 spiral wound gaskets held leak-free for 18 months of continuous 420 °C / 15 MPa steam service.
Explore gasketsPTFE, modified PTFE, expanded graphite and non-asbestos gaskets for reactors, columns, heat exchangers and acid pipelines. Selected for resistance to acids, alkalis, solvents and steam, with low cold-flow under bolt load. Our restructured PTFE grades reduce creep by up to 40% compared with virgin PTFE, extending maintenance intervals on sulphuric acid and caustic service.
Explore PTFE gasketsHigh-temperature sealing for steam turbines, HRSG boilers, condensers, flue gas ducts and feedwater lines. Graphite and mica based constructions maintain seal integrity through thermal cycling up to 650 °C without creep relaxation. Our high-purity expanded graphite sheets use < 50 ppm chloride content to protect stainless steel flanges from stress corrosion cracking.
Explore high-temp sheetsRubber, EPDM, nitrile and PTFE gaskets for pumps, valves, RO membrane housings and seawater intake lines. Formulated for chloride-rich and mildly oxidising media where metal gaskets would corrode. EPDM grades are peroxide-cured for low extractables and comply with NSF/ANSI 61 for potable water contact applications.
Explore rubber gasketsFlange insulation kits, copper gaskets and braided packing for ship engines, ballast systems, cargo manifolds and offshore topside modules. Supplied with isolation sleeves and washers to stop galvanic corrosion at dissimilar metal joints. Our Type D and Type E kits are ABS and DNV reviewed and used on FPSO topside and LNG carrier piping.
Explore insulation kitsSend a drawing, a sample or even a photo with dimensions — our engineering team returns a quotation and 2D/3D confirmation within 24 hours. Private labelling, custom packaging and drop-shipping available for distributors and OEM partners. We hold stock tooling for over 200 standard ASME and EN gasket sizes, so custom dimensions with standard bolt circles ship without new tooling cost.
Send your drawingEvery shipment carries an in-house material test report. Third-party inspection and EN 10204 3.1 / 3.2 certificates are available on request.
Direct answers to the questions our buyers ask most before placing a first order.
Kaxite manufactures spiral wound gaskets, kammprofile (grooved metal) gaskets, ring joint gaskets, double jacketed gaskets, corrugated gaskets, PTFE and modified PTFE gaskets, expanded graphite gaskets, rubber gaskets, copper gaskets and flange insulation gasket kits. We also produce braided packing, compression sheets and PTFE / PEEK machined seals for the same industries.
Standard catalogue sizes start from 100 pieces with stock available for trial orders. Custom gaskets made to your drawing have no fixed MOQ — we accept prototype and small-batch runs. Sample and small-batch lead time is 7–10 working days; complex geometries, special alloys or high-volume orders take 15–20 working days. Expedited production is available for shutdown and turnaround schedules.
Spiral wound gaskets are the standard choice for ASME B16.20 flanges in refinery and petrochemical service — they offer high recovery, handle pressure and temperature cycling, and suit most standard flange sizes. Kammprofile gaskets use a solid metal core with a graphite or PTFE facing and are preferred where the flange is subject to high compression loads, large diameters, or where blow-out resistance is critical. Send us your flange standard, pressure rating, temperature and media, and our engineers will recommend the right construction in 24 hours.
We quote on EXW, FOB Ningbo/Shanghai, CIF and DDP terms. Payment is accepted by T/T (30% deposit, 70% before shipment), L/C at sight, or negotiated terms for repeat customers. Shipping is arranged by sea, air or express courier depending on order volume and urgency.
Yes. Every batch is tested in our in-house laboratory for compression, creep relaxation, tensile strength and sealability, and ships with a material test report. EN 10204 3.1 certificates are issued as standard on request, and 3.2 certificates, SGS, BV or TUV third-party inspection can be arranged before shipment.
Absolutely. We offer private labelling with your logo on the gasket, carton and product tag, custom packaging sizes and barcoding, plus drop-shipping for distributors. Our engineering team can also work from a drawing, a physical sample or a photo with dimensions and return a quotation with 2D/3D confirmation within 24 hours.
Send us your flange size, pressure rating, temperature and media — or simply upload a drawing. Our engineers will recommend the right gasket construction and return pricing, lead time and shipping terms.
